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Toshiaki Koike Akino

Ph.D. in Informatics
JSPS Postdoctoral Fellow for Research Abroad

Harvard University
School of Engineering and Applied Sciences
Communications and Networking Laboratory
33 Oxford Street, MD-117, Cambridge, MA 02138, U.S.A.

E-mail: koike@seas.harvard.edu

Gender: Male
DOB: Apr. 18. 1979
Detail CV: [PDF download here]
Short resume: [PDF download here]

Academic Record

• Feb. 2006-Feb. 2010, working as a postdoctoral research scholar at School of Engineering and Applied Sciences, Harvard University.
• Sept. 2005, received Ph.D. degree of Informatics in Dept. of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University
  [PDF download] Ph.D. Thesis: ``Space-time-frequency signal processing for spectrum-efficient multiple-antenna wireless transmission systems''
• Sept. 2003, received M.S. degree of Informatics in Dept. of Communications and Computer Engineering, Graduate School of Informatics, Kyoto University
• Mar. 2002, received B.S. degree of Engineering from School of Electrical and Electronic Engineering, Faculty of Engineering, Kyoto University

Awards

• IEEE GLOBECOM2009 Best Paper Award (Wireless Communications Symposium): ``Unified analysis of linear block precoding for distributed antenna systems''

  

• The 24th TELECOM System Technology Encouragement Award.
• IEEE GLOBECOM2008 Best Paper Award (Wireless Communications Symposium): ``Denoising maps and constellations for wireless network coding in two-way relaying systems''

  

• The Ericsson Young Scientist Award 2008: ``Space-time-frequency signal processing for spectrum-efficient multiple-antenna wireless transmission systems''

  

• IEICE Communications Society Meritorious Award 2008
• IEICE Communications Society Meritorious Award 2006
• The 21st TELECOM System Technology Award: ``Prototype implementation of real-time ML detectors for spatial multiplexing transmission''
• The 4th YRP Encouragement Award: ``MLSE adaptive equalizer with per-survivor QR decomposition in trellis-coded MIMO transmissions''
• IEEE VTS Japan Chapter presented VTC2005-Spring Student Paper Award: ``FPGA implementation of real-time 1Gbps 4x4 MIMO-MLD''
• IEICE 2003 Active Research Award in Radio Communication Systems

Scholarships, Fellowships & Research Grants

• JSPS Postdoctoral Fellow for Research Abroad: during Mar. 2008 - Feb. 2010.
• Research Grant by Support Center for Advanced Telecommunications Technology Research (SCAT)
• Telecommunications Advancement Foundation (TAF) Fellow for Research Abroad: during Apr. 2007 - Feb. 2008.
• JSPS Postdoctoral Research Fellow: during Oct. 2005 - Mar. 2007.
• Research Grant for JSPS Research Fellow
• Research Fellow of the Japan Society for the Promotion Science (JSPS): during Apr. 2004. - Sept. 2005.
• Research Assistant for the 21st Century Center of Excellence (COE) Program: during Oct. 2003 - Sept. 2005.

Academic Society and Job Experience

• Technical committee member of ICC 2011.
• Technical committee member of PIMRC 2009.
• Technical committee member of GLOBECOM 2009.
• Postdoctoral Researcher at MERL in 2008.
• Member of the IEEE: since June 2005.
• Reviewer of the IEICE Transactions on Communications: since Mar. 2004.
• Member of the Institute of Electronics, Information and Communication Engineers (IEICE): since May 2002.

Research Interest

• Distributed cooperative multiuser detection, diversity, multiplexing, and modulations
• Multi-point information theory and wireless network coding with cooperation and competition
• Body-area networks, and healthcare information technology
• Base-band signal processing relevant to detection schemes of co-channel signals (including space-time transmissions, multiple-input multiple-output, and spatial multiplexing)
• Hardware implementations and experiments relevant to space-time transmission systems
• Coded modulations, equalization, error control schemes and pre-coding
• Quantum informatics, quantum error coding, quantum algorithms for massively parallel computations

Presentation Lists

Book Chapter

• Petar Popovski and Toshiaki Koike-Akino, ``Coded Bidirectional Relaying in Wireless Networks,'' invited chapter in V. Tarokh et al. (eds.), ``New Directions in Wireless Communications,'' Springer, Aug. 2009. (ISBN: 978-1-4419-0672-4)

  

Journal Papers and Letters

• Toshiaki Koike-Akino, Peter Larsson, Petar Popovski, and Vahid Tarokh, ``Linear vs. non-linear network coding for discrete two-way relaying channels,'' submitted to IEEE Transactions on Communications, Sept. 2009.
• Toshiaki Koike-Akino, Andreas F. Molisch, Chunjie Duan, Zhifeng Tao, Philip Orlik, and Toshiyuki Kuze, ``Capacity, MSE and secrecy analysis of linear block precoding for distributed antenna systems in frequency-selective fading channels,'' submitted to IEEE Transactions on Communications, Sept. 2009.
• Jesper H. Sorensen, Rasmus Krigslund, Petar Popovski, Toshiaki Koike Akino, and Torben Larsen, ``Scalable denoise-and-forward in bidirectional relay networks,'' Computer Networks, Dec. 2009.
• Toshiaki Koike-Akino, Natasha Devroye, and Vahid Tarokh, ``Frequency-domain bit-flipping equalizer for wideband MIMO channels,'' IEEE Transactions on Wireless Communications, vol. 8, no. 10, pp. 4869-4973, Oct. 2009.
• Jesper H. Sorensen, Rasmus Krigslund, Petar Popovski, Toshiaki Koike Akino, and Torben Larsen, ``Physical layer network coding for FSK systems,'' IEEE Communications Letters, Aug. 2009.
• [PDF download] Toshiaki Koike-Akino, Petar Popovski, and Vahid Tarokh, ``Optimized constellations for two-way wireless relaying with physical network coding,'' IEEE Journal on Selected Areas in Communications , vol. 27, no. 5, pp. 773-787, June 2009.
• Toshiaki Koike-Akino, ``Low-complexity systolic V-BLAST architecture,'' IEEE Transactions on Wireless Communications, vol. 8, no. 5, May 2009.
• [PDF download] Toshiaki Koike Akino, ``Optimum-weighted RLS channel estimation for rapid fading MIMO channels,'' IEEE Transactions on Wireless Communications, vol. 7, no. 11, pp. 4248-4260, Nov. 2008.
• [PDF download] Toshiaki Koike, Yukinaga Seki, Hidekazu Murata, Susumu Yoshida, and Kiyomichi Araki, ``Prototype implementation of real-time ML detectors for spatial multiplexing transmission,'' IEICE Transactions on Communications, vol. E89-B, no.3, pp. 845-852, March 2006.
• [PDF download] Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``Experimental evaluation of spatial interleaving in trellis-coded MIMO transmission,'' IEICE Transactions on Communications, vol. E89-B, no. 3, pp. 985-989, March 2006.
• Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``Adaptive MLSE equalizer with per-survivor QR decomposition for trellis-coded MIMO transmission,'' Kluwer Journals on Wireless Personal Communications, vol. 35, pp. 213--225, October 2005.
• [PDF download] Toshiaki Koike, Masakazu Tanaka, and Susumu Yoshida, ``Capacity improvement of multihop inter-vehicle communication networks by STBC cooperative relaying,'' IEICE Transactions on Communications, vol. E88-B, no. 9, pp. 3546-3553, September 2005.
• [PDF download] Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``Genetic design method for near-optimal training sequences in wideband multiple antenna systems,'' IEICE Transactions on Communications, vol. E88-B, no. 8, pp. 3488-3492, August 2005.
• Toshiaki Koike and Susumu Yoshida, ``Space-time trellis-coded ternary PSK for mobile communications,'' IEE Electronics Letters, vol. 40, no. 16, pp. 1011-1012, August 2004.
• [PDF download] Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``Evaluation of HARQ scheme with antenna permutation and TCM reassignment for space-time transmission in slow Nakagami-Rice fading MIMO channel,'' IEICE Transactions on Communications, vol. E87-B, no. 6, pp. 1487-1494, June 2004.

International Conference

• Peter Larsson, Besma Smida, Toshiaki Koike-Akino, and Vahid Tarokh, ``Analysis of network coded HARQ for multiple unicast flows,'' The 2010 IEEE International Conference of Communications (ICC2010), Cape Town, South Africa, June 2010.
• Toshiaki Koike-Akino, Takashi Hamahata, Toshiro Akino, and Goji T. Etoh, ``Device simulation and experimental measurement of high-voltage U-CBiCMOS buffer driver for ultra-high-speed CCD image sensors,'' submitted to The 2010 Asia and South Pacific Design Automation Conference (ASP-DAC 2010), Taipei, Taiwan, Jan. 2010.
• [Best Paper Award] [Slide download] Toshiaki Koike-Akino, Andreas F. Molisch, Zhifeng Tao, Philip Orlik, and Toshiyuki Kuze, ``Unified analysis of linear block precoding for distributed antenna systems,'' The 2009 IEEE Global Communications Conference(GLOBECOM 2009), Hawaii, November 2009.
• [Slide download] Toshiaki Koike-Akino, Petar Popovski, and Vahid Tarokh, ``Adaptive modulation and network coding with optimized precoding in two-way relaying,'' The 2009 IEEE Global Communications Conference(GLOBECOM 2009), Hawaii, November 2009.
• [Slide download] Toshiaki Koike-Akino, ``SAR analysis in dispersive tissues for in vivo UWB body area networks,'' The 2009 IEEE Global Communications Conference(GLOBECOM 2009), Hawaii, November 2009.
• [Slide download] Toshiaki Koike-Akino and Vahid Tarokh, ``Non-linear network coding in two-way relaying discrete channels,'' The 2009 International Conference on Wireless Communications and Signal Processing (WCSP2009), Nanjing, China, Nov. 2009. (Invited Presentation)
• [Slide download] Toshiaki Koike-Akino, Petar Popovski, and Vahid Tarokh, ``Denoising strategy for convolutionally-coded bidirectional relaying,'' The 2009 IEEE International Conference on Communications (ICC 2009), Dresden, Germany, June 2009.
• [Slide download] Toshiaki Koike-Akino and Vahid Tarokh, ``Sphere packing optimization and EXIT chart analysis for multi-dimensional QAM signaling,'' The 2009 IEEE International Conference on Communications (ICC 2009), Dresden, Germany, June 2009.
• Petar Popovski, Toshiaki Koike-Akino, and Vahid Tarokh, ``Two-way relaying with network coding for frequency-selective fading channels,'' The 2008 Asilomar Conference on Signal, Systems, and Computers, Pacific Grove, CA, Oct. 2008. (Invited Presentation)
• [Best Paper Award] [Slide download] Toshiaki Koike-Akino, Petar Popovski, and Vahid Tarokh, ``Denoising maps and constellations for wireless network coding in two-way relaying systems,'' The 2008 IEEE Global Communications Conference (GLOBECOM 2008), New Orleans, LA, Nov.-Dec. 2008.
• [Slide download] Toshiaki Koike-Akino, ``Bit-flipping equalizer and ML search-space analysis for ultra-wideband MIMO channels,'' The 2008 IEEE Global Communications Conference (GLOBECOM 2008), New Orleans, LA, Nov.-Dec. 2008.
• [Slide download] Toshiaki Koike Akino, ``Optimum-weighted RLS channel estimation for time-varying fast fading MIMO channels,'' Proc. of The 2007 IEEE International Conference on Communications (ICC 2007), Glasgow, Scotland, June 2007.
• [Slide download] Toshiaki Koike, ``Low-complexity architecture of MMSE/V-BLAST with recurrence formula for systolic weights generation,'' Proc. of The 9th International Symposium on Wireless Personal Multimedia Communications (WPMC 2006), San Diego, U.S.A., September 2006.
• Kohei Kiyoshima, Toshiaki Koike, and Susumu Yoshida, ``Algorithm-diversity of MIMO-MMSE with multiple channel estimation schemes for fast fading channels,'' Proc. of The 9th International Symposium on Wireless Personal Multimedia Communications (WPMC 2006), San Diego, U.S.A., September 2006.
• [Slide download] Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``Iterative FDE for DD-based cooperative relaying with FD-STBC in quasi-synchronous networks,'' Proc. of The 15th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2006), Helsinki, Finland, September 2006.
• Toshiaki Koike, Yukinaga Seki, Hidekazu Murata, Susumu Yoshida, and Kiyomichi Araki, ``FPGA prototyping of MIMO detector for over-1Gbps wireless transmissions,'' Proc. of The XXVIIIth URSI General Assembly (URSI-GA 2005), New Delhi, India, October 2005. (invited presentation)
• [Slide download] Toshiaki Koike and Susumu Yoshida, ``Approximated ML detector using Hopfield neural network in MIMO spatial multiplexing systems,'' Proc. of The 8th International Symposium on Wireless Personal Multimedia Communications (WPMC 2005), pp. 858-862, Aalborg, Denmark, September 2005.
• [Slide download] Toshiaki Koike, Masakazu Tanaka, and Susumu Yoshida, ``System-level evaluation of STC cooperative relaying scheme in multihop IVC networks,'' Proc. of The 2nd Asia Pacific Wireless Communications Symposium (APWCS 2005), pp. 60-64, Sapporo, Japan, August 2005.
• Yasunori Nouda, Toshiaki Koike, and Susumu Yoshida, ``Iterative MLD equalizer preceded by MIMO-FDE for wideband spatial multiplexing systems,'' Proc. of The 61st IEEE Semiannual Vehicular Technology Conference (VTC 2005-Spring), Stockholm, Sweden, May-June 2005.
• [Slide download] Toshiaki Koike, Yukinaga Seki, Hidekazu Murata, Susumu Yoshida, and Kiyomichi Araki, ``FPGA implementation of 1Gbps real-time 4x4 MIMO-MLD,'' Proc. of The 61st IEEE Semiannual Vehicular Technology Conference (VTC 2005-Spring), Stockholm, Sweden, May-June 2005.
• Toshiaki Koike, Daisuke Nishikawa, and Susumu Yoshida, ``Metric-segmented low-complexity ML detection for spectrum-efficient multiple-antenna systems,'' Proc. of The 61st IEEE Semiannual Vehicular Technology Conference (VTC 2005-Spring), Stockholm, Sweden, May-June 2005.
• [Slide download] Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``MLSE adaptive equalizer with per-survivor QR decomposition for trellis-coded MIMO transmissions,'' Proc. of The 7th International Symposium on Wireless Personal Multimedia Communications (WPMC 2004), Abano Terme, Italy, September 2004.
• [Slide download] Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``Frequency-domain SC/MMSE iterative equalizer with MF approximation in LDPC-coded MIMO transmissions,'' Proc. of The 15th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2004), Barcelona, Spain, September 2004.
• [Slide download] Toshiaki Koike and Susumu Yoshida, ``Genetic designing of near-optimal training sequences for spatial multiplexing transmissions,'' Proc. of The Joint Conference of 10th Asia-Pacific Conference on Communications and 5th International Symposium on Multi-Dimensional Mobile Communications (APCC/MDMC 2004), Beijing, China, vol. 1, pp. 474-478, August-September 2004.
• [Slide download] Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``Hybrid ARQ scheme suitable for coded MIMO transmission,'' Proc. of The IEEE International Conference on Communications (ICC 2004), Paris, France, June 2004.
• [Slide download] Toshiaki Koike and Susumu Yoshida, ``Space-time coded ternary phase shift keying,'' Proc. of The 4th International Conference on Information, Communications & Signal Processing 4th IEEE Pacific-Rim Conference On Multimedia (ICICS-PCM 2003), Singapore, December 2003.
• [Slide download] Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``Laboratory experiments of coded space-time transmission with spatial interleaving for wireless MIMO channels,'' Proc. of The 6th International Symposium on Wireless Personal Multimedia communications (WPMC 2003), Yokosuka, Japan, vol. 2, pp. 396-400, October 2003.
• [Slide download] Toshiaki Koike, Hidekazu Murata, and Susumu Yoshida, ``Spatial interleaving for vector Viterbi equalizer with super-trellis decoding in trellis-coded space-time transmission,'' Proc. of The 14th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2003), Beijing, China, vol. 2, pp. 1302-1306, September 2003.
• [Slide download] Toshiaki Koike, Koutarou Shiizaki, Hidekazu Murata, and Susumu Yoshida, ``Experimental study of multi-user detector with trellis-coding for microcellular radio,'' Proc. of The 5th International Symposium on Wireless Personal Multimedia communications (WPMC 2002), Honolulu, Hawaii, vol. 3, pp. 1252-1256, October 2002.

Technical Reports and Local Conferences

• He has more-than 45 papers for technical reports and local conferences.