Joint OSIC and Soft ML Decoding Scheme for Coded Layered Space-Time OFDM Systems
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In this paper, we consider coded layered space-time architecture in MIMO-OFDM channels. Vertical Bell Lab Layered Space-Time (V-BLAST) scheme employing ordered successive interference cancellation (OSIC) algorithm provides very high spectral efficiency with low computational complexity. However, the error propagation is a major drawback constraining the overall performance of the V-BLAST system significantly. Based on this problem, we derive an improved detector using soft bit log-likelihood ratio (LLR) value. Simulation results show that the proposed detector outperforms the conventional V-BLAST scheme under spatially uncorrelated as well as correlated fading channels.
[1] 유상조,et al. 무선 네트워크에서 채널 효율성을 높이기 위한 멀티채널 MAC 프로토콜 , 2008 .
[2] 조성현,et al. 순방향 및 역방향 신호를 이용한 핸드오버 기법 , 2008 .