概要

100MHzの周波数帯域幅で、最大スループット2.5Gbit/s (周波数利用効率25bit/s/Hz)を実現するVSF−Spread OFDM 無線アクセスを用いた超高速パケット信号伝送実験の技術 概要、装置構成および屋外実験結果について解説する。

樋口 健一/田岡 秀和

文献
[1] Recommendation ITU−R M.1645.
[2] Y. Kishiyama, N. Maeda, K. Higuchi, H. Atarashi and M. Sawahashi:“Transmission Performance Analysis of VSF-OFCDM Broadband Packet Wireless Access Based on Field Experiments in 100-MHz Forward Link,”in Proc. IEEE VTC2004−Fall, pp. 1113−1117, Sep.2004.
[3] H. Taoka, K. Higuchi and M. Sawahashi:“Field Experiments on Real−Time 1−Gbps High−Speed Packet Transmission in MIMO−OFDM Broadband Packet Radio Access,”to be appeared in Proc. IEEE VTC2006−Spring, May 2006.
[4] IST−2003−507581, D7.1 v1.0, System Requirements, WINNER, July,2004.
[5] K. J. Kim and J. Yue:“Joint channel estimation and data detection algorithms for MIMO−OFDM systems,”in Proc. Thirty −Sixth Asilomar Conference on Signals, Systems and Computers, pp. 1857−1861, Nov. 2002.
[6] K. Higuchi, H. Kawai, N. Maeda and M. Sawahashi:“Adaptive Selection of Surviving Symbol Replica Candidates Based on Maximum Reliability in QRM-MLD for OFCDM MIMO Multiplexing,”in Proc.IEEE Globecom 2004, pp. 2480−2486, Nov. 2004.
[7] H. Kawai, K. Higuchi, N. Maeda and M. Sawahashi:“Performance of QRM−MLD employing two−dimensional multi−slot and carrier−averaging channel estimation using orthogonal pilot channel for OFCDM MIMO multiplexing in multipath fading channel,” in Proc. Wireless2004, pp. 208−214, Jul. 2004.
[8] K. Higuchi, H. Kawai, N. Maeda, M. Sawahashi, T. Itoh, Y. Kakura, A. Ushirokawa and H. Seki:“Likelihood function for QRM−MLD suitable for soft−decision turbo decoding and its performance for OFCDM MIMO multiplexing in multipath fading channel,”in Proc. IEEE PIMRC2004, pp. 1142−1148, Sep. 2004.

本記事は、テクニカル・ジャーナルVol.14 No.1に、掲載されています。

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