Pilot-Based Channel State Feedback in TDD/MIMO Systems with Co-channel Interference
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概要
- 論文の詳細を見る
This paper proposes a pilot-based channel state information (CSI) feedback from a terminal to a base station (BS), considering the terminals co-channel interference in a time-division duplex/multi-input multi-output system. In the proposed method, the terminal determines a precoding matrix according to the terminals co-channel interference characteristics and transmits the precoded pilot signals on uplink. Using the responses of the precoded pilot signals, the BS determines appropriate weight vectors for downlink transmit beams considering the terminals interference characteristics. Furthermore, the BS can predict the terminals output signal-to-interference-plus-noise power ratio (SINR) for the downlink data stream. Numerical results show that the BS can achieve efficient transmission and accurate SINR prediction using the proposed CSI feedback.
- （社）電子情報通信学会の論文
- 2009-03-01
著者
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HARA Yoshitaka
Mitsubishi Electric Corporation
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Oshima Kazuyoshi
Mitsubishi Electric Information Technol. Centre Europe B.v. (ite). Rennes Fra
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Oshima Kazuyoshi
Mitsubishi Electric Information Technology Centre Europe B. V. (ite).
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Hara Yoshitaka
Mitsubishi Electric Corp. Kamakura‐shi Jpn
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