Publication List

September 2023

Journals

  1. Y. Hama and H. Ochiai, "Can spatial modulation outperform spatial multiplexing in practical band-limited coded systems?" IEEE Communications Magazine, (published, September 2023).

  2. Y. Hama and H. Ochiai, "Time-frequency domain non-orthogonal multiple access for power efficient communications," IEEE Transactions on Wireless Communications, vol. 22, no. 9, pp. 5711-5724, September 2023.

  3. V. Yachongka, H. Yagi, and H. Ochiai, "Key agreement using physical identifiers for degraded and less noisy authentication channels," IEEE Transactions on Information Forensics and Security, vol. 18, pp. 5316-5331, August 2023.

  4. Y. Hama and H. Ochiai, "On the achievable spectral efficiency of non-orthogonal frequency division multiplexing," IEEE Transactions on Communications, (published, August 2023).

  5. T. Shen, Y. Hama, and H. Ochiai, "STBC-enabled secure wireless transmission with cooperative devices under imperfect CSI of destination," IEEE Access, vol. 11, pp. 46804-46819, May 2023.

  6. H. Ochiai, "On spectral efficiency of OFDM signals based on windowing," (invited paper), IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E106-A, no. 5, pp. 752-764, May 2023.

  7. H. Ochiai, K. Ikeya, and P. Mitran, "A new polar code design based on reciprocal channel approximation," IEEE Transactions on Communications, vol. 71, no. 2, pp. 631-643, February 2023.

  8. M. Shahrbaf Motlagh, S. Majhi, P. Mitran, and H. Ochiai, "On rate-splitting with non-unique decoding in multi-cell massive MIMO systems," IEEE Transactions on Communications, vol. 70, no. 9, pp. 5929-5945, September 2022.

  9. Y. Hama and H. Ochiai, "Binary-input ternary-output turbo codes for ternary PSK transmission," IEEE Communications Letters, vol. 26, no. 9, pp. 1974-1978, September 2022.

  10. Y. Hama and H. Ochiai, "Matched-filter detector with quadrature interference cancellation for coded uplink multiuser MIMO systems with massive IoT devices," IEEE Transactions on Wireless Communications, vol. 21, no. 6, pp. 4025-4038, June 2022.

  11. T. Matsumine, H. Ochiai, and J. Shikata, "Security gap improvement of BICM systems through bit-labeling optimization for the Gaussian wiretap channel," IEEE Access, vol. 10, pp. 47805-47813, May 2022.

  12. Y. Sun and H. Ochiai, "Maximum-likelihood-based performance enhancement of clipped and filtered OFDM systems with clipping noise cancellation," IEEE Wireless Communications Letters, vol. 11, no. 3, pp. 448-452, March 2022.

  13. T. Matsumine, T. Koike-Akino, and H. Ochiai, "A low-complexity probabilistic amplitude shaping with short linear block codes," IEEE Transactions on Communications, vol. 69, no. 12, pp. 7923-7933, December 2021.

  14. Y. Sun and H. Ochiai, "Performance analysis and comparison of clipped and filtered OFDM systems with iterative distortion recovery techniques," IEEE Transactions on Wireless Communications, vol. 20, no. 11, pp. 7389-7403, November 2021.

  15. H. Ochiai, P. Mitran and H. V. Poor, "Capacity-approaching polar codes with long codewords and successive cancellation decoding based on improved Gaussian approximation," IEEE Transactions on Communications, vol. 69, no. 1, pp. 31-43, January 2021.

  16. T. Shen and H. Ochiai, "A UAV-enabled wireless powered sensor network based on NOMA and cooperative relaying with altitude optimization," IEEE Open Journal of the Communications Society, vol. 2, pp. 21-34, December 2020.

  17. T. Matsumine and H. Ochiai, "A novel PAPR reduction scheme for polar-coded OFDM systems," IEEE Communications Letters, vol. 23, no. 12, pp. 2372-2375, December 2019.

  18. S. Takizawa and H. Ochiai, "PAPR reduction of OFDM with trellis shaping based on p-norm minimization," IEEE Wireless Communications Letters, vol. 8, no. 4, pp. 988-991, August 2019.

  19. Y. Hama and H. Ochiai, "Performance analysis of matched-filter detector for MIMO spatial multiplexing over Rayleigh fading channels with imperfect channel estimation," IEEE Transactions on Communications, vol. 67, no. 5, pp. 3220-3233, May 2019.

  20. T. Matsumine and H. Ochiai, "Capacity-approaching non-binary turbo codes: A hybrid design based on EXIT charts and union bounds," IEEE Access, vol. 6, pp. 70952-70963, November 2018.

  21. Y. Watanabe and H. Ochiai, "Exploiting variable-length padding bits for decoder performance improvement with its application to compressed video transmission," Signal Processing: Image Communication, vol. 66, pp. 66-76, August 2018.

  22. D. Yoda and H. Ochiai, "Decision region optimization and metric-based compensation of memoryless nonlinearity for APSK systems," IEEE Transactions on Broadcasting, vol. 64, no. 2, pp. 281-292, June 2018.

  23. T. Matsumine and H. Ochiai, "A serial concatenation of binary-input nonbinary-output convolutional code and recursive convolutional lattice code," IEEE Access, vol. 6, pp. 24809-24817, May 2018.

  24. Y. Hori and H. Ochiai, "A new uplink multiple access based on OFDM with low PAPR, low latency, and high reliability," IEEE Transactions on Communications, vol. 66, no. 5, pp. 1996-2008, May 2018.

  25. T. Murata and H. Ochiai, "Performance analysis of CRC codes for systematic and non-systematic polar codes with list decoding," Wireless Communications and Mobile Computing, vol. 2018, 8 pages, May 2018.

  26. R. Yoshizawa and H. Ochiai, "Energy efficiency improvement of coded OFDM systems based on PAPR reduction," IEEE Systems Journal, vol. 11, no. 2, pp. 717-728, June 2017.

  27. T. Lee and H. Ochiai, "A new trellis shaping design for peak power reduction of SC-FDMA signals with high-order QAM," IEEE Transactions on Vehicular Technology vol. 66, no. 6, pp. 5030-5042, June 2017.

  28. M. Matsuoka, R. Yoshizawa, and H. Ochiai, "Peak and average power reduction of OFDM signals based on trellis shaping with controllable region expansion," Wireless Personal Communications, vol. 93, no. 3, pp. 737-754, April 2017.

  29. R. Yoshizawa and H. Ochiai, "Trellis-assisted constellation subset selection for PAPR reduction of OFDM signals," IEEE Transactions on Vehicular Technology, vol. 66, no. 3, pp. 2183-2198, March 2017.

  30. V. Singh and H. Ochiai, "Performance analysis of the clustering-based multihop wireless energy harvesting sensor networks over symmetric and asymmetric fading channels," International Journal of Distributed Sensor Networks, vol. 13, no. 2, Februray 2017.

  31. F. Ono, H. Ochiai, and R. Miura, "A wireless relay network based on unmanned aircraft system with rate optimization," IEEE Transactions on Wireless Communications, vol. 15, no. 11, pp. 7699-7708, November 2016.

  32. Y. Watanabe and H. Ochiai, "A novel design and modeling of UEP-based compressed video broadcasting with multilevel coded modulation," IEEE Transactions on Broadcasting, vol. 62, no. 3, pp. 598-609, September 2016.

  33. J. Song and H. Ochiai, "Performance analysis for OFDM signals with peak cancellation," IEEE Transactions on Communications, vol. 64, no. 1, pp. 261-270, January 2016.

  34. Y. Hori and H. Ochiai, "Performance analysis and interleaver structure optimization for short-frame BICM-OFDM systems," IEEE Transactions on Wireless Communications, vol. 15, no. 1, pp. 651-662, January 2016.

  35. H. Ochiai, "High-order moments and Gaussianity of single-carrier and OFDM signals," IEEE Transactions on Communications, vol. 63, no. 12, pp. 4964-4976, December 2015.

  36. D. Yoda and H. Ochiai, "Multilevel coded modulation with reduced latency decoding based on novel set partitioning for APSK," IEEE Transactions on Broadcasting, vol. 61, no. 4, pp. 674-684, December 2015.

  37. P. Mitran and H. Ochiai, "Parallel concatenated convolutional lattice codes with constrained states," IEEE Transactions on Communications, vol. 63, no. 4, pp. 1081-1090, April 2015.

  38. J. Song and H. Ochiai, "A low-complexity peak cancellation scheme and its FPGA implementation for peak-to-average power ratio reduction," EURASIP Journal on Wireless Communications and Networking, vol. 2015, March 2015.

  39. R. Yoshizawa and H. Ochiai, "A trellis shaping for peak and average power reduction of BICM-OFDM signals," IEEE Transactions on Wireless Communications, vol. 14, no. 2, pp. 1143-1154, February 2015.

  40. T. Lee and H. Ochiai, "Characterization of power spectral density for nonlinearly amplified OFDM signals based on cross-correlation coefficient," EURASIP Journal on Wireless Communications and Networking, vol. 2014, November 2014.

  41. R. Yoshizawa and H. Ochiai, "Performance comparison of uncoded OFDM systems with trellis shaping over nonlinear channels," Wireless Personal Communications, vol. 72, no. 3, pp. 1603-1617, October 2013.

  42. H. Ochiai, "Statistical distributions of instantaneous power and peak-to-average power ratio for single-carrier FDMA systems," (invited paper), Physical Communication, vol. 8, pp. 47-55, September 2013.

  43. K. Ishibashi, W. Y. Shin, H. Ochiai, and V. Tarokh, "A peak power efficient cooperative diversity using star-QAM with coherent/noncoherent detection," IEEE Transactions on Wireless Communications, vol. 12, no. 5, pp. 2137-2147, May 2013.

  44. H. Ochiai, "An analysis of band-limited communication systems from amplifier efficiency and distortion perspective," IEEE Transactions on Communications, vol. 61, no. 4, pp. 1460-1472, April 2013.

  45. M. Tanahashi and H. Ochiai, "Power-reductive precoding for the transmission of correlated information sequences," IEEE Transactions on Communications, vol. 61, no. 4, pp. 1393-1403, April 2013.

  46. H. Ochiai, "On instantaneous power distributions of single-carrier FDMA signals," IEEE Wireless Communications Letters, vol. 1, no. 2, pp. 73-76, April 2012.

  47. K. Ishibashi and H. Ochiai, "Analysis of instantaneous power distributions for non-regenerative and regenerative relaying signals," IEEE Transactions on Wireless Communications, vol. 11, no. 1, pp. 258-265, January 2012.

  48. K. Ishii, K. Ishibashi, and H. Ochiai, "Multilevel coded cooperation for multiple sources," IEEE Transactions on Wireless Communications, vol. 10, no. 12, pp. 4258-4269, December 2011.

  49. M. Tanahashi and H. Ochiai, "A new reduced-complexity conditional-mean based MIMO signal detection using symbol distribution approximation technique," IEEE Transactions on Signal Processing, vol. 59, no. 11, pp. 5644-5651, November 2011.

  50. H. Ochiai, "Exact and approximate distributions of instantaneous power for pulse-shaped single-carrier signals," IEEE Transactions on Wireless Communications, vol. 10, no. 2, pp. 682-692, February 2011.

  51. K. Ishibashi, K. Ishii, and H. Ochiai, "Dynamic coded cooperation using multiple turbo codes in wireless relay networks," IEEE Journal of Selected Topics in Signal Processing, vol. 5, no. 1, pp.197-207, February 2011.

  52. T. Aoki, H. Ochiai, and R. Kohno, "Combined trellis precoding and error correcting codes in multi-user MIMO-OFDM systems," IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.E93-A, no. 12, pp. 2663-2671, December 2010.

  53. M. Tanahashi and H. Ochiai, "Symbol insertion: A low-complexity joint peak power reduction and forward error correction for single-carrier systems," IEEE Transactions on Communications, vol. 58, no. 11, pp. 3244-3253, November 2010.

  54. Y. Nishino, M. Tanahashi, and H. Ochiai, "A bit-labeling design for trellis-shaped single-carrier PSK with PAPR reduction," EURASIP Journal on Advances in Signal Processing, vol. 2011, September 2010.

  55. M. Tanahashi and H. Ochiai, "On the distribution of instantaneous power in single-carrier signals," IEEE Transactions on Wireless Communications, vol. 9, no. 2, pp. 1207-1215, March 2010.

  56. M. Tanahashi and H. Ochiai, "Turbo decoding of concatenated channel coding and trellis shaping for peak power controlled single-carrier systems," IEEE Transactions on Communications, vol. 58, no. 1, pp. 9-15, January 2010.

  57. M. Tanahashi and H. Ochiai, "A multilevel coded modulation approach for hexagonal signal constellation," IEEE Transactions on Wireless Communications, vol. 8, no. 10, pp. 4993-4997, October 2009.

  58. K. Ishibashi, K. Ishii, and H. Ochiai, "Bit-interleaved coded DPSK with cyclic delay diversity: Design and analysis," IEEE Transactions on Wireless Communications, vol. 8, no. 9, pp. 4762-4772, September 2009.

  59. M. Tanahashi and H. Ochiai, "Trellis shaping for controlling envelope of single-carrier high-order QAM signals," IEEE Journal of Selected Topics in Signal Processing, vol. 3, no. 3, pp. 430-437, June 2009.

  60. M. Tanahashi and H. Ochiai, "Near constant envelope trellis shaping for PSK signaling," IEEE Transactions on Communications, vol. 57, no. 2, pp. 450-458, February 2009.

  61. K. Ishibashi, H. Ochiai, and R. Kohno, "Embedded forward error control technique (EFECT) for low-rate but low latency communications," IEEE Transactions on Wireless Communications, vol. 7, pp. 1456-1460, May 2008.

  62. H. Ochiai, P. Mitran, and V. Tarokh, "Variable-rate two-phase collaborative communication protocols for wireless networks," IEEE Transactions on Information Theory, vol. 52, no. 9, pp. 4299-4313, September 2006.

  63. H. Ochiai, P. Mitran, H. V. Poor, and V. Tarokh, "Collaborative beamforming for distributed wireless ad hoc sensor networks," IEEE Transactions on Signal Processing, vol. 53, no. 11, pp. 4110-4124, November 2005.

  64. K. Ishibashi, H. Ochiai, and R. Kohno, "Low-complexity bit-interleaved coded DAPSK for Rayleigh fading channels," IEEE Journal on Selected Areas in Communications, Special Issue on Differential and Noncoherent Wireless Communications, vol. 23, no. 9, pp. 1728-1738, September 2005.

  65. P. Mitran, H. Ochiai, and V. Tarokh, "Space-time diversity enhancements using collaborative communications," IEEE Transactions on Information Theory, vol. 51, no. 6, pp. 2041-2057, June 2005.

  66. H. Ochiai, "A novel trellis shaping design with both peak and average power reduction for OFDM systems," IEEE Transactions on Communications, vol. 52, no. 11, pp. 1916-1926, November 2004.

  67. G. de Abreu, H. Ochiai, and R. Kohno, "Linear maximum likelihood decoding of space-time block coded OFDM systems for mobile communications," IEE Proceedings - Communications, Special Section on WLAN Systems and Interworking, vol. 151, no. 5, pp. 447-459, October 2004.

  68. T. Minowa, H. Ochiai, and H. Imai, "Phase noise effects on turbo trellis-coded modulation over M-ary coherent channels," IEEE Transactions on Communications, vol. 52, no. 8, pp. 1333-1343, August 2004.

  69. A. Ishii, H. Ochiai, and T. Fujino, "Multiple-symbol differential detection for OFDM over both time- and frequency-selective Rayleigh fading channels," EURASIP Journal on Applied Signal Processing, Special Issue on Multicarrier Communications and Signal Processing, vol. 2004, no. 10, pp. 1536-1545, August 2004.

  70. H. Ochiai, "Performance analysis of peak power and band-limited OFDM system with linear scaling," IEEE Transactions on Wireless Communications, vol. 2, no. 5, pp. 1055-1065, September 2003.

  71. H. Ochiai and H. Imai, "Performance analysis of deliberately clipped OFDM signals," IEEE Transactions on Communications, vol. 50, no. 1, pp. 89-101, January 2002.

  72. H. Ochiai and H. Imai, "On the distribution of the peak-to-average power ratio in OFDM signals," IEEE Transactions on Communications, vol. 49, no. 2, pp. 282-289, February 2001.

  73. H. Ochiai and H. Imai, "Performance of the deliberate clipping with adaptive symbol selection for strictly band-limited OFDM systems," IEEE Journal on Selected Areas in Communications, Wireless Communications Series, vol. 18, no. 11, pp. 2270-2277, November 2000.

  74. H. Ochiai, M. Fossorier, and H. Imai, "On decoding of block codes with peak-power reduction in OFDM systems," IEEE Communications Letters, vol.4, no.7, pp. 226-228, July 2000.

  75. H. Ochiai and H. Imai, "MDPSK-OFDM with highly power-efficient block codes for frequency-selective fading channels," IEEE Transactions on Vehicular Technology, vol. 49, no.1, pp. 74-82, January 2000.

  76. H. Ochiai and H. Imai, "Performance of OFDM-CDMA with simple peak power reduction," European Transactions on Telecommunications, vol. 10, no.4, pp. 391-398, July/August 1999.

  77. H. Ochiai and H. Imai, "Block coding scheme based on complementary sequences for multicarrier signals," IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.E80-A, no.11, pp. 2136-2143, November 1997.



Selected Conference Papers

  1. D. Muramatsu and H. Ochiai, "Design of multilevel coding for clipped and filtered OFDM with clipping noise cancellation," in Proceedings of IEEE 19th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2023), Montreal, QC, Canada, June 2023.

  2. Z. E. Ekolle, R. Kohno, and H. Ochiai, "A distributed cybersecurity solution in an IoMT network using a multi-target federated learning," in Proceedings of 2023 IEEE 17th International Symposium on Medical Information and Communication Technology (ISMICT 2023), Lincoln, NE, USA, May 2023.

  3. T. Shen, V. Yachongka, and H. Ochiai, "Secure NOMA-based indoor VLC networks with body blockage model," in Proceedings of 2023 IEEE Wireless Communications and Networking Conference (WCNC), Glasgow, Scotland, UK, Mar. 2023.

  4. Y. Hama, K. Hanazawa, H. Ochiai, and J. Shikata, "Performance analysis for coded wireless steganography system with OFDM signaling," in Proceedings of 2023 IEEE Radio and Wireless Symposium (RWS), Las Vegas, NV, USA, Jan. 2023.

  5. E. Kurihara and H. Ochiai, "A systematic constellation design for BICM systems with geometric shaping," in Proceedings of 2023 IEEE Consumer Communications & Networking Conference (CCNC), Las Vegas, NV, USA, Jan. 2023.

  6. M. Kaneko and H. Ochiai, "A new low-complexity polar code construction for BICM over AWGN channels," in Proceedings of 2022 IEEE Military Communications Conference (MILCOM'22), Rockville, MD, November 2022.

  7. V. Yachongka, H. Yagi, and H. Ochiai, "Secret-key agreement using physical identifiers for degraded and less noisy authentication channels ," in Proceedings of 2022 IEEE Information Theory Workshop (ITW), Mumbai, India, November 2022.

  8. Y. Hama, H. Ochiai, and J. Shikata, "Performance analysis of wireless steganography based on OFDM and DFT-s-OFDM signals over frequency-selective Rayleigh fading channels," in Proceedings of The 24th International Symposium on Wireless Personal Multimedia Communications (WPMC 2021), Okayama, Japan, December 2021.

  9. Y. Hama and H. Ochiai, "Performance of coded MIMO spatial modulation with scaling matched-filter detector," in Proceedings of IEEE Global Communications Conference (GLOBECOM 2020), Taipei, Taiwan, December 2020.

  10. R. Yamaguchi, H. Ochiai, and J. Shikata, "A physical-layer security based on wireless steganography through OFDM and DFT-precoded OFDM signals," in Proceedings of 2020 IEEE Vehicular Technology Conference Spring (VTC2020-Spring), Antwerp, Belgium, May 2020.

  11. Y. Yajima and H. Ochiai, "On Design of Multilevel Coded Modulation Based on CRC-Concatenated Polar Codes," in Proceedings of IEEE Consumer Communications & Networking Conference, (CCNC2020) , Las Vegas, NV, January 2020.

  12. Y. Hama and H. Ochiai, "Performance of Polar Coded MIMO Systems with Matched-Filter Detector and Interference Cancellation," in Proceedings of IEEE Global Communications Conference (GLOBECOM 2019), Waikoloa, HI, USA, December 2019.

  13. T. Shen and H. Ochiai, "A UAV-Aided Selective Relaying with Cooperative Jammers for Secure Wireless Networks over Rician Fading Channels," in Proceedings of 2019 IEEE Vehicular Technology Conference Spring (VTC2019-Fall), Honolulu, HI, USA, September 2019.

  14. S. Takizawa and H. Ochiai, "Trellis shaping using clipping-based metric with improved PAPR reduction for OFDM signals," in Proceedings of Radio & Wireless Symposium (RWS2019), Orlando, FL, January 2019.

  15. T. Shen and H. Ochiai, "A UAV-aided data collection for wireless powered sensor network over Rician fading channels," in Proceedings of IEEE Consumer Communications & Networking Conference, (CCNC2019) , Las Vegas, NV, January 2019.

  16. T. Matsumine, B. M. Kurkoski, and H. Ochiai, "Construction D lattice decoding and its application to BCH code lattices," in Proceedings of IEEE Global Communications Conference (GLOBECOM2018), Abu Dhabi, UAE, December 2018.

  17. K. Masukawa and H. Ochiai, "A coded MIMO spatial multiplexing approach with low-complexity matched-filter detector and CRC-assisted interference cancellation," in Proceedings of 2018 IEEE Military Communications Conference (MILCOM'18), Los Angeles, CA, October 2018.

  18. Y. Hama and H. Ochiai, "Performance comparison of low-complexity MIMO system with matched-filter detector and interference cancellation," in Proceedings of 25th IEEE International Conference on Telecommunications (ICT2018) , Saint-Malo, France, June 2018.

  19. T. Matsumine and H. Ochiai, "A design of non-binary turbo codes over finite fields based on Gaussian approximation and union bounds," in Proceedings of 2018 IEEE Vehicular Technology Conference Spring (VTC2018-Spring), Porto, Portugal, June 2018.

  20. T. Yokokawa and H. Ochiai, "Software defined radio implementation of SOCC-based OFDM system with low PAPR," in Proceedings of 2018 IEEE Vehicular Technology Conference Spring (VTC2018-Spring), Porto, Portugal, June 2018.

  21. Y. Hori and H. Ochiai, "Uplink multiple access based on MIMO-OFDM with adaptive super-orthogonal convolutional codes for ultra reliable and low latency communications," in Proceedings of Workshop on 5G TACNET, 2018 IEEE International Conference on Communications (ICC 2018 Workshops), Kansas City, MO, May 2018.

  22. J. Watanabe and H. Ochiai, "A new low-complexity trellis shaping design based on clipping for PAPR reduction in BICM-OFDM system," in Proceedings of 2018 IEEE Wireless Communications and Networking Conference (WCNC 2018) , Barcelona, Spain, April 2018.

  23. T. Matsumine and H. Ochiai, "A new turbo coded modulation approach exploiting non-binary field," in Proceedings of 2018 Radio and Wireless Symposium (RWS 2018) , pp. 72-75, Anaheim, CA, January 2018.

  24. M. Arakawa H. Ochiai, "On throughput optimization for coded OFDM with variable cyclic prefix length," in Proceedings of The 20th International Symposium on Wireless Personal Multimedia Communications (WPMC 2017), Indonesia, December 2017.

  25. Y. Hama and H. Ochiai, "Performance analysis of matched filter detector for MIMO systems in Rayleigh fading channels," in Proceedings of IEEE Global Communications Conference (GLOBECOM 2017) , Singapore, December 2017.

  26. T. Matsumine and H. Ochiai, "Triple parallel concatenated trellis coded modulation," in Proceedings of 2017 IEEE 28th Annual International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC 2017), Montreal, QC, Canada, October 2017.

  27. F. Ono, H. Ochiai, R. Miura, and F. Kojima, On spectral sharing based on power control for aerial and ground communication links in Proceedings of 2017 IEEE Vehicular Technology Conference Fall (VTC2017-Fall), Toronto, ON, Canada, September 2017.

  28. H. Ochiai, "Fourth-order moment analysis of filtered single-carrier and OFDM signals," (invited paper) in Proceedings of 2017 IEEE Vehicular Technology Conference Fall (VTC2017-Fall), Toronto, ON, Canada, September 2017.

  29. S. Hagihara and H. Ochiai, "An adaptive MIMO-BICM system with CRC-assisted two-stage interference cancellation," in Proceedings of 2017 IEEE 18th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2017), Sapporo, Japan, July 2017.

  30. T. Murata and H. Ochiai, "On design of CRC codes for polar codes with successive cancellation list decoding," in Proceedings of The 2017 IEEE International Symposium on Information Theory (ISIT 2017), pp. 1868-1872, Aachen, Germany, June 2017.

  31. V. Singh and H. Ochiai, "An efficient time switching protocol with adaptive power splitting for wireless energy harvesting relay networks," in Proceedings of 2017 IEEE Vehicular Technology Conference Spring (VTC2017-Spring), Sydney, NSW, Australia, June 2017.

  32. Y. Yamashita and H. Ochiai, "A classification of OFDM signals with or without DFT precoding based on high-order moment," in Proceedings of 2017 2017 IEEE International Symposium on Dynamic Spectrum Access Networks, (DySPAN 2017), Baltimore, MD, March 2017.

  33. V. Singh and H. Ochiai, "Throughput improvement by cluster-based multihop wireless networks with energy harvesting relays," in Proceedings of 2017 IEEE Topical Conference on Wireless Sensors and Sensor Networks, (WiSNet 2017), pp. 61-64, Phoenix, AZ, January 2017.

  34. Y. Hori and H. Ochiai, "Performance analysis of multiuser detection and decoding for subcarrier hopping multiple access," in Proceedings of 14th IEEE Annual Consumer Communications & Networking Conference (CCNC 2017), Las Vegas, NV, January 2017.

  35. Y. Yamashita and H. Ochiai, "Performance of OFDM systems with adaptive DFT-precoding," in Proceedings of 50th Asilomar Conference on Signals, Systems and Computers (Asilomar 2016), pp. 894-898 Pacific Grove, CA, November 2016.

  36. Y. Hama and H. Ochiai, "A low-complexity matched filter detector with parallel interference cancellation for massive MIMO systems," in Proceedings of IEEE 12th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2016), New York, NY, October 2016.

  37. T. Matsumine and H. Ochiai, "Punctured parallel concatenated convolutional lattice codes," in Proceedings of 9th International Symposium on Turbo Codes and Iterative Information Processing (ISTC 2016), pp. 116-120 Brest, France, September 2016.

  38. Y. Hori and H. Ochiai, "Performance evaluation of subcarrier hopping multiple access in wireless LAN scenarios," in Proceedings of 2016 IEEE 27th Annual International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC 2016), Valencia, Spain, September 2016.

  39. Y. Hori and H. Ochiai, "A design of multiuser detection and decoding for subcarrier hopping multiple access based on coded OFDM," in Proceedings of 2016 IEEE International Conference on Communications (ICC 2016), Kuala Lumpur, Malaysia, May 2016.

  40. J. Song and H. Ochiai, "A novel FPGA implementation of trellis shaping for PAPR reduction of OFDM signals," in Proceedings of 2016 IEEE International Conference on Communications (ICC 2016), Kuala Lumpur, Malaysia, May 2016.

  41. Y. Watanabe and H. Ochiai, "Exploiting padding bits for improvement of channel decoder performance," in Proceedings of IEEE Global Communications Conference (GLOBECOM 2015) , San Diego, CA, December 2015.

  42. R. Yoshizawa and H. Ochiai, "Mutual information and coded BER analysis of PAPR reduced OFDM system with active constellation extension," in Proceedings of IEEE Global Communications Conference (GLOBECOM 2015) , San Diego, CA, December 2015.

  43. Y. Hori and H. Ochiai, "A low PAPR subcarrier hopping multiple access with coded OFDM for low latency wireless networks," in Proceedings of IEEE Global Communications Conference (GLOBECOM 2015) , San Diego, CA, December 2015.

  44. H. Ochiai, "High-order statistical analysis for linearly modulated signals," in Proceedings of 2015 IEEE Military Communications Conference (MILCOM'15), Tampa, FL, October 2015.

  45. Y. Yamashita and H. Ochiai, "Performance comparison of coded OFDM with DFT-Precoding over nonlinear channels," in Proceedings of 2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB2015), Montreal, Canada, October 2015.

  46. R. Yoshizawa and H. Ochiai, "Effect of clipping and filtering with distortionless PAPR reduction for OFDM systems," in Proceedings of 2015 IEEE Vehicular Technology Conference Fall (VTC2015-Fall), Boston, MA, September 2015.

  47. Y. Hori and H. Ochiai, "Bit error rate analysis of convolutionally coded BICM with specific interleaver structures," in Proceedings of 2015 IEEE International Conference on Communications (ICC 2015), pp. 4272-4277, London, UK, June 2015.

  48. R. Yoshizawa and H. Ochiai, "Theoretical error rate analysis of trellis shaped M-QAM constellations," in Proceedings of The 2015 IEEE Wireless Communications and Networking Conference (WCNC 2015), pp. 609-614, New Orleans, LA, March 2015.

  49. Y. Watanabe and H. Ochiai, "An optimal code rate design of multilevel coded modulation for multimedia data transmission employing unequal error protection," in Proceedings of IEEE Global Communications Conference (GLOBECOM 2014) , pp. 1406-1411, Austin, TX, December 2014.

  50. D. Yoda and H. Ochiai, "Distortion modeling and analysis for multilevel coded APSK with memoryless nonlinearity," in Proceedings of IEEE Global Communications Conference (GLOBECOM 2014) , pp. 2874-2879, Austin, TX, December 2014.

  51. J. Song and H. Ochiai, "FPGA implementation of peak cancellation for PAPR reduction of OFDM signals," in Proceedings of 2014 IEEE International Conference on Communication Systems (ICCS 2014), Macau, November 2014.

  52. K. Ikeda, F. Ono, H. Ochiai, and R. Miura, "A virtual MIMO relay system with unmanned aircraft and multiple ground stations", in Proceedings of 2014 IEEE Vehicular Technology Conference Fall (VTC2014-Fall), Vancouver, BC, Canada, September 2014.

  53. R. Yoshizawa and H. Ochiai, "A novel trellis-based PAPR reduction technique for OFDM signals", in Proceedings of The 2014 IEEE International Symposium on Information Theory (ISIT 2014), pp. 1563-1567, Honolulu, HI, June 2014.

  54. J. Song and H. Ochiai, "Amplifier efficiency and distortion trade-off of OFDM system with iterative clipping and filtering," in Proceedings of The 2014 IEEE Wireless Communications and Networking Conference (WCNC 2014), Istanbul, Turkey, April 2014.

  55. Y. Hori and H. Ochiai, "An interleaver optimization for BICM-OFDM with convolutional codes over frequency-selective block fading channels," in Proceedings of The 2014 IEEE Wireless Communications and Networking Conference (WCNC 2014), Istanbul, Turkey, April 2014.

  56. T. Lee and H. Ochiai, "A simple characterization of power spectral density for nonlinearly amplified OFDM signals," in Proceedings of Power Amplifiers for Radio and Wireless Applications (PAWR) Conference, 2014 Radio and Wireless Week (RWW 2014) , Newport Beach, CA, January 2014.

  57. F. Ono, H. Ochiai, K. Takizawa, M. Suzuki, and R. Miura, "Performance analysis of wireless relay network using network coding and UAS," in Proceedings of 4th International Workshop on Wireless Networking and Control for Unmanned Autonomous Vehicles, IEEE Global Communications Conference (GLOBECOM 2013) , Atlanta, GA, December 2013.

  58. R. Miyauchi and H. Ochiai, "Classification of M-ary QAM based on instantaneous power moment with adjustable median," in Proceedings of 2013 IEEE Military Communications Conference (MILCOM'13), pp. 52-57, San Diego, CA, November 2013.

  59. R. Yoshizawa and H. Ochiai, "Analysis and optimization of trellis shaping concatenated with bit-interleaved coded modulation," in Proceedings of 2013 IEEE Vehicular Technology Conference Fall (VTC2013-Fall), Las Vegas, NV, September 2013.

  60. H. Ochiai, "On modulation selection for energy-efficient band-limited communication systems," in Proceedings of The 10th International Symposium on Wireless Communication Systems (ISWCS 2013), Ilmenau, Germany, August 2013.

  61. F. Ono, T. Muramatsu, H. Ochiai, and R. Miura, "A signal constellation design for STBC with spatial and temporal modulation," in Proceedings of The 10th International Symposium on Wireless Communication Systems (ISWCS 2013), Ilmenau, Germany, August 2013.

  62. D. Yoda and H. Ochiai, "A reduced-complexity multilevel coded modulation for APSK signaling," in Proceedings of The 2013 IEEE International Symposium on Information Theory (ISIT 2013), pp. 1994-1998, Istanbul, Turkey, July 2013.

  63. M. Matsuoka, R. Yoshizawa, and H. Ochiai, "Improvement of peak and average power reduction of trellis shaped OFDM signals by controllable region expansion," in Proceedings of The 16th International Symposium on Wireless Personal Multimedia Communications (WPMC 2013), Atlantic City, NJ, June 2013.

  64. T. Tsubaki and H. Ochiai, "A new candidate adding algorithm for coded MIMO systems with fixed-complexity detection," in Proceedings of 2013 IEEE International Conference on Communications (ICC 2013), pp. 4525-4529, Budapest, Hungary, June 2013.

  65. F. Ono, H. Ochiai, K. Takizawa, M. Suzuki, and R. Miura, "Two-way relay networks using unmanned aircraft systems," in Proceedings of 2013 IEEE Vehicular Technology Conference Spring (VTC2013-Spring), Dresden, Germany, June 2013.

  66. T. Lee and H. Ochiai, "Peak power reduction of SC-FDMA signals based on trellis shaping," in Proceedings of IEEE Global Communications Conference (GLOBECOM 2012), Anaheim, CA, December 2012.

  67. K. Kinoshita and H. Ochiai, "Energy minimization of wireless sensor networks based on modulation and coding optimization under finite frame length constraint," in Proceedings of 2012 IEEE Military Communications Conference (MILCOM'12), Orlando, FL, October 2012.

  68. T. Muramatsu, F. Ono, H. Ochiai, and R. Miura, "A space-time block code with temporal and spatial modulation," in Proceedings of The 15th International Symposium on Wireless Personal Multimedia Communications (WPMC 2012), Taipei, Taiwan, September 2012.

  69. S. Mukai, F. Ono, H. Ochiai, and R. Miura, "Adaptive one-way and two-way relaying for MIMO relay networks," in Proceedings of The 15th International Symposium on Wireless Personal Multimedia Communications (WPMC 2012), Taipei, Taiwan, September 2012.

  70. K. Ishibashi, H. Ochiai, and V. Tarokh, "Energy harvesting cooperative communications," in Proceedings of 2012 IEEE 23rd International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC 2012), Sydney, Australia, September 2012.

  71. Y. Nishino and H. Ochiai, "Comparison of coded modulations for trellis-shaped single-carrier PSK with PAPR reduction," in Proceedings of 2012 IEEE Vehicular Technology Conference Fall (VTC2012-Fall), Quebec City, Canada, September 2012.

  72. R. Yoshizawa and H. Ochiai, "A serial concatenation of coding and trellis shaping for OFDM systems with peak power reduction," in Proceedings of The 2012 IEEE International Symposium on Information Theory (ISIT 2012), MIT, MA, July 2012.

  73. S. Tanaka and H. Ochiai, "Further complexity reduction of MIMO PSK signal detection based on symbol distribution approximation," in Proceedings of 2012 IEEE International Conference on Communications (ICC 2012), Ottawa, June 2012.

  74. T. Ferrett, H. Ochiai, and M. C. Valenti, "Physical-layer network coding using FSK modulation under frequency offset," in Proceedings of 2012 IEEE Vehicular Technology Conference Spring (VTC2012-Spring), Yokohama, May 2012.

  75. H. Ochiai, "Peak-to-average power ratio distribution analysis of single-carrier FDMA signals" (invited session presentation), in 18th Proceedings of European Wireless Conference (EW 2012), Poznan, Poland, April 2012.

  76. K. Ishibashi, W. Shin, H. Yi, and H. Ochiai, "A peak power efficient cooperative diversity using star-QAM," in Proceedings of 7th IEEE Broadband Wireless Access Workshop (BWA), IEEE Global Communications Conference (GLOBECOM 2011) , Houston, TX, December 2011.

  77. H. Ochiai, "On power amplifier efficiencies of linearly modulated signals with nonlinear distortion," in Proceedings of The 8th International Symposium on Wireless Communication Systems (ISWCS 2011) , pp. 397-401, Aachen, Germany, November 2011.

  78. R. Yoshizawa and H. Ochiai, "Performance comparison of trellis-shaped OFDM systems over nonlinear channels," in Proceedings of The 14th International Symposium on Wireless Personal Multimedia Communications (WPMC 2011) , Brest, France, October 2011.

  79. F. M. Costa, B. H. C. Faria, F. A. C. M. Filho, and H. Ochiai, "Physical layer energy optimization analysis for fixed bandwidth wireless sensor networks," in Proceedings of The 14th International Symposium on Wireless Personal Multimedia Communications (WPMC 2011) , Brest, France, October 2011.

  80. R. Yoshizawa and H. Ochiai, "Peak power reduction of OFDM signals using trellis shaping with M-algorithm," in Proceedings of 1st Workshop on Flexibility in Broadband Wireless Access Network (FlexBWAN), The 20th IEEE International Conference on Computer Communications Networks (ICCCN 2011) , Maui, HI, August 2011.

  81. K. Ishibashi and H. Ochiai, "Performance analysis of amplify and forward cooperation over peak-power limited channel," in Proceedings of 2010 IEEE International Conference on Communications (ICC 2011) , Kyoto, Japan, June 2011.

  82. F. M. Costa and H. Ochiai, "Energy-efficient physical layer design for wireless sensor network links," in Proceedings of 2010 IEEE International Conference on Communications (ICC 2011) , Kyoto, Japan, June 2011.

  83. T. Lee and H. Ochiai, "On limitation of clipping and filtering in IEEE 802.11g based wireless LAN system," in Proceedings of The 12th annual IEEE Wireless and Microwave Technology Conference (WAMICON 2011) , Clearwater, FL, April 2011.

  84. F. M. Costa and H. Ochiai, "A comparison of modulations for energy optimization in wireless sensor network links," in Proceedings of The 2010 IEEE Global Telecommunications Conference (GLOBECOM 2010) , Miami, FL, December 2010.

  85. H. Ochiai, "An approximate distribution of instantaneous power in band-limited PSK signals," in Proceedings of The 2010 IEEE Global Telecommunications Conference (GLOBECOM 2010) , Miami, FL, December 2010.

  86. H. Ochiai, "Effectiveness of peak power reduction schemes for OFDM and single-carrier systems (invited talk)," Presented at the Workshop on Broadband Single Carrier and Frequency Domain Communications, The 2010 IEEE Global Telecommunications Conference (GLOBECOM 2010) , Miami, FL, December 2010.

  87. Y. Nishino, M. Tanahashi, and H. Ochiai, "A new bit-labeling for trellis-shaped PSK with improved PAPR reduction Capability," in Proceedings of 2010 International Symposium on Information Theory and its Applications / International Symposium on Spread Spectrum and its Applications (ISITA2010/ISSSTA2010) , Taichung, Taiwan, October 2010.

  88. K. Enokizono and H. Ochiai, "A simple interleaver design for variable-length turbo codes," in Proceedings of The 6th International Symposium on Turbo Codes & Iterative Information Processing (ISTC 2010) , Brest, France, September 2010.

  89. T. Lee and H. Ochiai, "Experimental analysis of clipping and filtering effects on OFDM systems," in Proceedings of The 2010 IEEE International Conference on Communications (ICC 2010), Cape Town, South Africa, May 2010.

  90. K. Ishibashi, K. Ishii, and H. Ochiai, "Dynamic turbo coded cooperation with simple power detection," in Proceedings of The 2010 IEEE International Conference on Communications (ICC 2010), Cape Town, South Africa, May 2010.

  91. F. M. Costa and H. Ochiai, "Energy optimization for reliable point-to-point communication in energy-constrained networks," in Proceedings of 2010 IEEE 71st Vehicular Technology Conference Spring (VTC2010-Spring), Taipei, Taiwan, May 2010.

  92. M. Tanahashi and H. Ochiai, "Analysis and efficient computation of instantaneous power distribution of single-carrier signals," in Proceedings of The 2009 IEEE Global Telecommunications Conference (GLOBECOM 2009), Hawaii, December 2009.

  93. M. Iki, M. Tanahashi, and H. Ochiai, "Peak power reduction of single-carrier signals using trellis shaping with M and stack algorithms," in in Proceedings of 2009 IEEE 70th Vehicular Technology Conference Fall (VTC2009-Fall), Anchorage, Alaska, September 2009.

  94. M. Tanahashi and H. Ochiai, "Improving error rate performance of correlated sources by non-root-Nyquist pulse shaping," in Proceedings of 2009 IEEE 70th Vehicular Technology Conference Fall (VTC2009-Fall), Anchorage, Alaska, September 2009.

  95. K. Ishibashi, K. Ishii, and H. Ochiai, "Design of adaptive coded cooperation using rate compatible turbo codes," in Proceedings of 2009 IEEE 70th Vehicular Technology Conference Fall (VTC2009-Fall), Anchorage, Alaska, September 2009.

  96. S. Nakata, M. Tanahashi, and H. Ochiai, "On the performance of cooperative communications with constellation rearrangement," in Proceedings of The 12th International Symposium on Wireless Personal Multimedia Communications (WPMC 2009), Sendai, Japan, September 2009.

  97. H. Ochiai, "Some practical considerations for peak power reduction of OFDM systems" (invited paper), in Proceedings of The 12th International Symposium on Wireless Personal Multimedia Communications (WPMC 2009), Sendai, Japan, September 2009.

  98. M. Tanahashi and H. Ochiai, "On destructive superposition of shaping pulses in band-limited linear modulation systems," in Proceedings of The 2009 IEEE International Symposium on Information Theory (ISIT 2009), Seoul, Korea, June 2009.

  99. H. Kitagawa, M. Tanahashi, and H. Ochiai, "FPGA implementation of trellis shaping to control peak power for PSK signals," in Proceedings of The 2009 IEEE International Conference on Communications (ICC 2009), Dresden, Germany, June 2009.

  100. K. Ishii, K. Ishibashi, and H. Ochiai, "A novel cooperative diversity based on multilevel coded modulation," in Proceedings of The 2009 IEEE International Conference on Communications (ICC 2009), Dresden, Germany, June 2009.

  101. H. Ochiai and Y. Takayama, "A simple OFDM-based multiple access system with super-orthogonal convolutional codes and Golay sequence," in Proceedings of The 2009 IEEE Wireless Communications and Networking Conference (WCNC 2009), Budapest, Hungary, April 2009.

  102. T. Uchino and H. Ochiai, "On the performance of clipping noise cancellation for OFDM systems with high-order coded modulation," in Proceedings of The 2008 International Symposium on Information Theory and its Applications (ISITA 2008), Auckland, New Zealand, December 2008.

  103. M. Tanahashi and H. Ochiai, "Noncoherent iterative decoding of symbol insertion systems," in Proceedings of The 2008 International Symposium on Information Theory and its Applications (ISITA 2008), Auckland, New Zealand, December 2008.

  104. K. Ishibashi, K. Ishii, and H. Ochiai, "Collaborative diversity enhancements using rate-compatible turbo codes," in Proceedings of The 2008 International Symposium on Information Theory and its Applications (ISITA 2008), Auckland, New Zealand, December 2008.

  105. K. Ishii, K. Ishibashi, and H. Ochiai, "Multilevel coded cooperation: Concepts and design criteria," in Proceedings of The 2008 International Symposium on Information Theory and its Applications (ISITA 2008), Auckland, New Zealand, December 2008.

  106. K. Ishibashi, K. Ishii, and H. Ochiai, "Diversity order analysis of bit-interleaved coded DPSK with cyclic delay diversity," in Proceedings of The 2008 IEEE Global Telecommunications Conference (GLOBECOM 2008), New Orleans, December 2008.

  107. M. Tanahashi and H. Ochiai, "Trellis shaping with flexible control of peak and average power for single-carrier high-order QAM," in Proceedings of The 2008 IEEE Global Telecommunications Conference (GLOBECOM 2008), New Orleans, December 2008.

  108. T. Tamagawa and H. Ochiai, "An efficient hybrid ARQ system using multilevel coded modulation with reduced constellation size," in Proceedings of The 2008 IEEE Global Telecommunications Conference (GLOBECOM 2008), New Orleans, December 2008.

  109. M. Tanahashi and H. Ochiai, "A simple modulation code with peak power reduction and coding gain," in Proceedings of The 2008 IEEE International Conference on Communications (ICC 2008), Beijing, China, May 2008.

  110. M. Tanahashi and H. Ochiai, "Iterative decoding of concatenated channel coding and trellis shaping based on Markov model," in Proceedings of The 2007 IEEE Global Telecommunications Conference (GLOBECOM 2007), pp. 3905-3909, Washington D.C., November 2007.

  111. K. Ishibashi, H. Ochiai, and R. Kohno, "Embedded forward error control technique(EFECT) for low-rate real-time communications," in Proceedings of The 2007 IEEE Global Telecommunications Conference (GLOBECOM 2007), pp. 4565-4569, Washington D.C., November 2007.

  112. K. Ishibashi, H. Ochiai, and R. Kohno, "Low complexity bit-interleaved coded DAPSK with cyclic delay diversity," in Proceedings of the IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2007), pp. 1-5, Athens, Greece, September 2007.

  113. M. Tanahashi and H. Ochiai, "A new trellis shaping approach for pulse-shaped PSK signals with almost constant envelope," in Proceedings of The 2007 IEEE International Conference on Communications (ICC 2007), pp. 5598 - 5603, Glasgow, Scotland, June 2007.

  114. T. Masakawa and H. Ochiai, "Design of Reed-Solomon codes for OFDM systems with clipping and filtering," in Proceedings of The 2007 IEEE Wireless Communications & Networking Conference (WCNC 2007), pp. 1361-1366, Hong Kong, March 2007.

  115. M. Tanahashi and H. Ochiai, "A new trellis shaping design for peak power reduction of single-carrier QAM signals," in Proceedings of The 2006 International Symposium on Information Theory and its Applications (ISITA 2006), pp. 81-86, Seoul, Korea, October 2006.

  116. K. Hiwatashi, H. Ochiai, and J. Shikata, "A new secret key agreement scheme based on eigenvalues of channel matrices in phase-controlled MIMO systems," in Proceedings of The 2006 International Symposium on Information Theory and its Applications (ISITA 2006), pp. 265-270, Seoul, Korea, October 2006.

  117. H. Ochiai, "Amplifier efficiencies of OFDM systems with peak power and envelope variance reduction," in Proceedings of 2006 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT '06), pp. 828-833, Vancouver, B.C., Canada, August 2006.

  118. H. Tatsunami, K. Ishibashi, and H. Ochiai, "On the performance of LDPC codes with differential detection over Rayleigh fading channels," in Proceedings of 2006 IEEE 63rd Vehicular Technology Conference (VTC '06 Spring), pp. 2388-2392, Melbourne, Australia, May 2006.

  119. P. Mitran, H. Ochiai, and V. Tarokh, "Collaborative diversity enhancements for wireless communications," in Proceedings of 2005 IEEE International Conference on Communications (ICC 2005), pp. 2437-2441, Seoul, Korea, May 2005.

  120. H. Ochiai, P. Mitran, H. V. Poor, and V. Tarokh, "On the effects of phase estimation errors on collaborative beamforming in wireless ad hoc networks," in Proceedings of 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2005), vol. 3, pp. 657-660, Philadelphia, PA, March 2005.

  121. H. Ochiai, P. Mitran, H. V. Poor, and V. Tarokh, "Collaborative beamforming in ad hoc networks," in Proceedings of 2004 IEEE Information Theory Workshop (ITW 2004), pp. 396-401, San Antonio, TX, October 2004.

  122. H. Ochiai, P. Mitran, and V. Tarokh, "Design and analysis of collaborative diversity protocols for wireless sensor networks," in Proceedings of 2004 IEEE Fall Vehicular Technology Conference (VTC 2004 Fall), vol. 7, pp. 4645-4649, Los Angels, CA, September 2004.

  123. K. Ishibashi, H. Ochiai, and R. Kohno, "On the performance of bit-interleaved coded DAPSK over Rayleigh fading channels," in Proceedings of 2004 IEEE International Conference on Communications (ICC 2004), pp. 732-736, Paris, France, June 2004.

  124. H. Ochiai, "Performance of optimal and suboptimal detection for uncoded OFDM systems with deliberate clipping and filtering," in Proceedings of 2003 IEEE Global Telecommunications Conference (GLOBECOM 2003), pp. 1618-1622, San Francisco, CA, December, 2003.

  125. A. Ishii, H. Ochiai, and T. Fujino, "Multiple-symbol differential detection for OFDM over both time and frequency-selective Rayleigh fading channels," in Proceedings of The Sixth International Symposium on Wireless Personal Multimedia Communications (WPMC '03), Yokosuka, Japan, October 2003.

  126. H. Ochiai, "Trellis shaped coded OFDM systems with high power efficiency," in Proceedings of 2003 IEEE International Symposium on Information Theory (ISIT '03), p. 6, Yokohama, Japan, June 2003.

  127. H. Ochiai, "A new trellis shaping design for OFDM," in Proceedings of The Fifth International Symposium on Wireless Personal Multimedia Communications (WPMC '02), pp. 1019-1023, Honolulu, HI, October 2002.

  128. H. Ochiai, "Power efficiency comparison of OFDM and single-carrier signals," in Proceedings of 2002 IEEE Fall Vehicular Technology Conference (VTC '02 Fall), pp. 899-903, Vancouver, B.C., Canada, September 2002.

  129. H. Ochiai and H. Imai, "On clipping for peak-power reduction of OFDM signals," in Proceedings of 2000 IEEE Global Telecommunications Conference (GLOBECOM 2000), pp. 731-735, San Francisco, CA, November 2000.

  130. H. Ochiai and H. Imai, "Performance analysis of downlink multi-carrier CDMA with maximum-likelihood detection," in Proceedings of 2000 International Symposium on Information Theory and its Application (ISITA '00), pp. 748-751, Honolulu, HI, November 2000.

  131. H. Ochiai and H. Imai, "Channel capacity of clipped OFDM systems," in Proceedings of 2000 IEEE International Symposium on Information Theory (ISIT '00), p. 219, Sorrento, Italy, June 2000.

  132. T. Minowa, H. Ochiai, and H. Imai, "Phase noise effect on turbo-coded modulation over the coherent M-ary channel," in Proceedings of 2000 IEEE Vehicular Technology Conference (VTC '00 Spring), pp. 2232-2236, Tokyo, May 2000.

  133. H. Ochiai and H. Imai, "On the deliberately clipped and strictly bandlimited OFDM systems," in Proceedings of The Second International Symposium on Wireless Personal Multimedia Communications (WPMC '99), pp.251-256, Amsterdam, The Netherlands, September 1999.

  134. H. Ochiai and H. Imai, "Performance of downlink MC-CDMA with simple interference cancellation," presented at 1999 Second International Workshop on Multi-Carrier Spread Spectrum & Related Topics (MC-SS'99), DLR, Oberpfaffenhofen, Germany, September 1999; published in Multi-Carrier Spread-Spectrum & Related Topics , K.Fazel and S. Kaiser (Editors), Kluwer Academic Publishers, pp. 211-218, 1999.

  135. H. Ochiai and H. Imai, "Peak-power reduction schemes in OFDM systems: A review," in Proceedings of The First International Symposium on Wireless Personal Multimedia Communications (WPMC '98), pp.247-252, Yokosuka Research Park (YRP), November 1998.

  136. H. Ochiai and H. Imai, "Block codes for frequency diversity and peak power reduction in multicarrier systems," in Proceedings of 1998 IEEE International Symposium on Information Theory (ISIT '98), p.192, Cambridge, MA, August 1998.

  137. H. Ochiai and H. Imai, "OFDM-CDMA with peak power reduction based on the spreading sequences," in Proceedings of 1998 IEEE International Conference on Communications (ICC '98), pp.1299-1303, Atlanta, GA, June 1998.

  138. H. Ochiai and H. Imai, "Performance of block codes with peak power reduction for indoor multicarrier systems," in Proceedings of 1998 IEEE 48th Vehicular Technology Conference (VTC '98), pp. 338-342, Ottawa, Canada, May 1998.

  139. H. Ochiai and H. Imai, "Forward error correction with reduction of peak to average power ratio of QPSK multicarrier signals," in Proceedings of 1997 IEEE International Symposium on Information Theory (ISIT '97), p. 120, Ulm, Germany, June 1997.

  140. H. Ochiai and H. Imai, "On the performance of asynchronous multi-carrier CDMA," presented at 1997 First International Workshop on Multi-Carrier Spread Spectrum (MC-SS'97), DLR, Oberpfaffenhofen, Germany, April 1997; published in Multi-Carrier Spread-Spectrum , K.Fazel and G.P.Fettweis (Editors), Kluwer Academic Publishers, pp.227-234, 1997.



Book Chapters

  1. H. Ochiai and H. Imai, "Collaborative beamforming," in New Directions in Wireless Communications Research, V. Tarokh (Editor), Springer, 2009.

  2. H. Ochiai, P. Mitran, H. V. Poor, and V. Tarokh, "Random array theory and collaborative beamforming," in Handbook on Advancements in Smart Antenna Technologies for Wireless Networks, C. Sun, J. Cheng, and T. Ohira (Editors), Information Science Reference, July 2008.

  3. O. -S. Shin, N. Devroye, P. Mitran, H. Ochiai, S. S. Ghassemzadeh, H. T. Kung and V. Tarokh, "Cooperation, competition and cognition in wireless networks," in Cooperation in Wireless Networks: Principles and Applications, F. H. P. Fitzek and M. D. Katz (Editors), Springer, 2006.



Dissertation

  • H. Ochiai,   "Analysis and Reduction of Peak-to-Average Power Ratio in OFDM Systems,"   The University of Tokyo, March 2001.