2010

• 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.
• 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.
• 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.
• M. Tanahashi and H. Ochiai, "On the Distribution of Instantaneous Power in Single-Carrier Signals," IEEE Transactions on Wireless Communications, vol. 9, no. 3, pp. 1207-1215, March 2010.
• 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.

2009

• 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.
• 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.
• 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.
• M. Iki, M. Tanahashi, and H. Ochiai, "Peak Power Reduction of Single-Carrier Signals Using Trellis Shaping with M and Stack Algorithms," in Proceedings of 2009 IEEE 70th Vehicular Technology Conference Fall (VTC2009-Fall), Anchorage, Alaska, September 2009.
• 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.
• 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.
• 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.
• H. Ochiai, "[Invited Paper] Some Practical Considerations for Peak Power Reduction of OFDM Systems," in Proceedings of The 12th International Symposium on Wireless Personal Multimedia Communications (WPMC 2009), Sendai, Japan, September 2009.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.

2008

• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• H. Kitagawa, M. Tanahashi, and H. Ochiai, "FPGA Implementation of Trellis Shaping PSK System with Low Peak-to-Average Power Ratio," in Proceedings of The 2008 IEEE Sarnoff Symposium, Princeton, April 2008.

2007

• 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.
• 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.
• 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.
• 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. download
• 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 Congerence (WCNC 2007), pp. 1361-1366, Hong Kong, March 2007.

2006

• 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.
• 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.
• 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.
• H. Ochiai, "Amplifier efficiencies of OFDM systems with peak power and envelope variance reduction," in Proceedings of The 6th IEEE International Symposium on Signal Processing and Information Technology (ISSPIT 2006), pp. 828 - 833, Vancouver, Canada, August 2006.
• 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.

2005

• 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.
• 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.
• 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.
• 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.
• 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), vol. 3, pp. 657-660, Philadelphia, PA, March 2005.

Domestic Conference Publications

• Publications including those in Japanese can be found here.

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