COnnect All by Turbo NETwork: COATNET


Vision

      It is well known that according to Shannon’s channel coding theorem, if the information transmission rate R is lower than the channel capacity determined by the channel’s signal to noise power ratio, arbitrarily slam message error probability can be achieved. The discovery of the turbo codes, followed by the re-discovery of the low density parity check (LDPC), has triggered the research on the practical code design that can asymptotically achieve the Shannon limit without requiring unacceptably heavy computational burden. Decoding of those codes is based on the message passing algorithm, where likelihood ratio of a certain binary information bit being one versus being zero is propagated between the decoders of the constituency codes. The major aim of this project is to apply the turbo principle to solving the problems related to large scale distributed wireless communications systems. The abbreviation of the project, COATNET, standing for COnnect All by Turbo NETworks, represents the concept.

      A unique point of the COATNET project is that processing at the nodes distributed in the wireless communication network horizontally as well as vertically according to the OSI reference model is all performed based on the unified message passing algorithm; in the conventional system design concept, the processing at each node is closed internally, and no cross-layer issues were involved. The most significant expected outcome of this project is the optimization technique over the nodes as well as over the layers that can minimize the loss in the resources, including information rate, power, spectrum, and space. Furthermore, as an extension of the aim of the COATNET project, it is expected that a solution to solving large scale decision making systems having a lot of processing nodes connected via the network be derived, also based on the turbo concept.


COATNET Result

Period of Heisei 20 (2008-2009):
  • 1. Hironobu Hatamoto, Shinsuke Ibi, and Seiichi Sampei, "A Study on Cooperative Multiple Relay Transmission Scheme for Broadband Wireless Mesh Networks", Proceedings of International Workshop on Wireless Distributed Network organized in PIMRC'08, 2008.

  • 2. Seiichi Sampei and Shinsuke Ibi, "Enabling Technologies and Strategies for Radio Resource Management in Decentralized Heterogeneous Wireless Networks", Proceedings of International Workshop on Wireless Distributed Network organized in PIMRC'08.

  • 3. Marcus Grossmann and Tadashi Matsumoto, "Rate Allocation for K-user MAC with Turbo Equalization", Proceedings of ITG/IEEE Workshop on Smart Antennas, 2009.

  • 4. Dan Zhao, Axel Dauch, and Tadashi Matsumoto, "Modulation Doping for Repetition Coded BICM-ID with Irregular Degree Allocation", Proceedings of ITG/IEEE Workshop on Smart Antennas, 2009.

  • 5. Dan Zhao, Axel Dauch, and Tadashi Matsumoto, "BICM-ID Using Extended Mapping and Repetition Code with Irregular Node Degree Allocation", Proceedings of 2009-Spring IEEE Vehicular Technology Conference, 2009.

  • 6. Nghi H. Tran, Tho Le-Ngoc, and Tadashi Matsumoto, "A simple near-capacity bandwidth-efficient coded modulation scheme in Rayleigh fading", Proceedings of IEEE International Conference on Communications, 2009.

  • 7. Yuji Oishi, Hidekazu Murata, Koji Yamamoto, Susumu Yoshida, "Theoretical FER performance of multi-hop wireless cooperative networks using transmit diversity", Proceedings of IEEE Vehicular Technology Conference (VTC2008-Spring), 2008.

  • 8. Shizen Sasaki, Hidekazu Murata, Koji Yamamoto, Susumu Yoshida, "Study on distributed delay time control algorithm for cooperative multi-hop vehicular networks with cyclic delay diversity", Proceedings of 2nd IEEE International Symposium on Wireless Vehicular Communications (WiVeC2008), 2008.

  • 9. Hiroki Tanaka, Hidekazu Murata, Koji Yamamoto, Susumu Yoshida, "Performance evaluation of cooperative relaying networks using 3D ray launching method for wireless propagation prediction", Proceedings of IEEE Vehicular Technology Conference (VTC2008-Fall), 2008.

  • 10. Marcus Grossmann and Tadashi Matsumoto, "Rate Allocation for K-user MAC with Turbo Equalization", ITG/IEEE Workshop on Smart Antennas, Germany, 2009.

  • 11. Dan Zhao, Axel Dauch, Anwar Khoirul, and Tadashi Matsumoto, "Irregular Repetition Coded BICM-ID with Extended Mapping and Doping", The Fourth IEEE Workshop on Advanced Signal Processing for Wireless Communication Systems, Denmark, 2009.

  • 12. Dan Zhao, Axel Dauch, and Tadashi Matsumoto, "Modulation Doping for Repetition Coded BICM-ID with Irregular Degree Allocation", ITG/IEEE Workshop on Smart Antennas, Germany, 2009.

  • 13. Tadashi Matsumoto, "Frequency Domain Turbo Equalization for Single Carrier Signaling, and its Information Theoretic Considerations (Invited Talk)", Workshop on Single Carrier FDMA, New York 2009.

  • 14. 河下真臣，衣斐信介，三瓶政一, "ダイナミックスペクトル制御技術を適用したシングルキャリア伝送における繰返し伝搬路推定に関する検討", 無線通信システム研究会（RCS), 北海道大学, 2008年8月28日.

  • 15. 衣斐信介，三瓶政一, "ヘテロジニアス無線システムにおける周波数共存と波形整形技術", 電子情報通信学会2009年総合大会, 愛媛大学, 2009年3月18日.

  • 16. 村田英一，山本高至，吉田 進, "分散協力無線ネットワークの伝送技術 (招待講演)", 電子情報通信学会技術報告 RCS2008-119, 那覇市, Oct. 23, 2008.

  • 17. 村田英一，山本高至，吉田　進, "コグニティブ無線における協調した帯域選択と電力制御 (招待講演)", 電子情報通信学会技術報告，SR2008-81, 京都市, Jan. 23, 2009.


    COATNET Result

    Period of Heisei 21 (2009-2010):
  • 1. Haruka Obata, Shinsuke Ibi, Seiichi Sampei, "A Design for an EXIT Chart Based Scheduling and Rate Control for Multi-User MIMO Systems", IEEE Transaction Wireless Communications, October, Vol.8, No.10, pp. 5124-5132, 2009

  • 2. 畑本浩伸, 衣斐信介, 三瓶政一, "広帯域無線通信システムにおける中継ノードを利用した部分スペクトル再送方式", 電子情報通信学会論文誌, 2010年1月, Vol.J93-B,No1, 53－68.

  • 3. Marcus Grossmann, Thomas Ortlepp, and Tadashi Matsumoto, "Marcus Grossmann, Thomas Ortlepp, and Tadashi Matsumoto Rate Allocation for 2-User MAC with Turbo Equalization", IEEE Transaction Wireless Communications, March, 2010, Vol.9, No.3, 1033－1043.

  • 4. Nghi H. Tran, Tho Le-Ngoc, Ha Nguyen, and Tadashi Matsumoto, "Achieving Near-Capacity Performance on Multiple-Antenna Channels with A Simple Concatenation Scheme", IEEE Transactions Communications, April 2010, Vo58, No. 4, 1048－1059.

  • 5. Takashi Shimizu, Tadashi Matsumoto, Hidekazu Murata, Koji Yamamoto, Susumu Yoshida, "Cooperative relaying scheme using turbo compression technique for correlated information sources", 電子情報通信学会技術研究報告. 無線通信システム RCS2009-109, pp.19-24, 2009年11月26－27日.

  • 6. Y. Ogawa, K. Honma, W. Morita, and M. Isaka, "On the near-capacity signaling and coding scheme for the additive white Gaussian noise channel", IEEE WPMC09, Sendai, Sept. 7-10, 2009.

  • 7. Dan Zhao, Axel Dauch, and Tadashi Matsumoto, "BICM-ID Using Extended Mapping and Repetition Code with Irregular Node Degree Allocation", IEEE VTC09-Spring, Barcelona, April 26-29, 2009.

  • 8. Nghi H. Tran, Tho Le-Ngoc, and Tadashi Matsumoto, "A Simple Near-capacity Bandwidth-efficient Coded Modulation Scheme in Rayleigh Fading", IEEE ICC09, Dresden, June 14-18, 2009.

  • 9. Nghi H. Tran, Tho Le-Ngoc, Tadashi Matsumoto, and Ha H. Nguyen, "A Simple Near-Capacity Concatenation Scheme Over MISO Channels", 6th International ICST Conference on Broadband Communications, Networks, and Systems, Spain, Sept. 14-16, 2009.

  • 10. Juha Karjalainen, Antti Tölli, Tadashi Matsumoto, and Markku Juntti, "Power Allocation for Irregularly Modulated MIMO Signaling with Iterative Frequency Domain MIMO Detector", 2009 Asilomar Conference, CA.

  • 11. Juha Karjalainen, Antti Tolli, Tadashi Matsumoto, Markku Juntti, "On Convergence Constrained Precoder Design for Iterative Frequency Domain MIMO Detector", IEEE International Symposium on Information Theory, Korea, June 28-July 3, 2009.

  • 12. Khoirul Anwar and Tadashi Matsumoto, "MIMO Spatial Turbo Coding with Iterative Equalization", International IEEE/ITG Wireless Smart Antenna, Germany, Feb. 23-24, 2010.

  • 13. Khoirul Anwar, Hui Zhou, and Tadashi Matsumoto, "Chained Turbo Equalization for Block Transmission without Guard Interval", 2010 Spring IEEE Vehicular Technology Conference, Taiwan, May 16-19, 2010.

  • 14. 小川陽平，本間功朗，井坂元彦, "AWGN通信路の通信路容量に迫る符号化と変調に関する一検討", 電子情報通信学会情報理論研究会, 2009年7月26日.

  • 15. Shinsuke Ibi, "[invited] Selfish and Cooperative Dynamic Spectrum Controls for broadband MIMO transmissions in Cognitive Wireless Networks", ICICS 2009, 2009年12月9日.

  • 16. 竹林篤史, 衣斐信介, 三瓶政一, "ダイナミックスペクトル制御におけるEXIT基準ユーザ伝送帯域割り当てに関する検討", 電子情報通信学会無線通信システム研究会, 九州大学 福岡県福岡市, 2010年1月21日.

  • 17. 衣斐信介, 三瓶政一, "無線分散ネットワークにおける複数端末の周波数共用に関する一検討", 電子情報通信学会ソフトウェア無線研究会, YRP 神奈川県横須賀市, 2010年3月3日.

  • 18. 衣斐信介, "ベイズ理論と分散符号の繰返し復号", 電子情報通信学会 2010 年 総合大会, 東北大学, 2010年3月18日.

  • 19. Dan Zhao and Tadashi Matsumoto, "A Simple BICM-ID Technique for Turbo Equalization", 電子情報通信学会 2010 年 総合大会, 東北大学, 2010年3月18日.

  • 20. Hui Zhou, Khoirul Anwar, and Tadashi Matsumoto, "Chained Turbo Equalization for MIMO Single Carrier Block Transmission", 電子情報通信学会 2010 年 総合大会, 東北大学, 2010年3月18日.

  • 21. 西岡憲一、Khoirul Anwar、松本正, "空間相関を考慮したMIMOシステムの信号点拘束下における通信路容量、及び電力・レート配分法", 電子情報通信学会 2010 年 総合大会, 東北大学, 2010年3月18日.