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Linear Transceiver Design in MIMO Relay Systems with Different Channel State Information |
Gao Wei-dong; Wang Wen-bo; Cheng Yu; Peng Mu-gen; Zhang Huan |
Key Laboratory of Universal Wireless Communication, Ministry of Education,
Beijing University of Posts & Telecommunications, Beijing 100876, China |
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Abstract The design of transceivers in relaying systems is studied with full Channel State Information (CSI) or partial CSI at the relay. Based on the acquired CSI,the relay filters and retransmits its received signals and the destination recovers the original signals with linear Minimum Mean Square Error (MMSE) receiver. Simulation results show that the proposed relaying scheme is prior to the traditional Amplify-and-Forward (AF) relaying. At high Signal to Noise Ratio (SNR), the scheme based on partial CSI feedback behaves closely to that based on full CSI feedback.
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Received: 08 December 2008
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