신뢰성 정규화를 기반으로 한 개선된 V-BLAST 수신기 구조에 관한 연구

Abstract

We present an improved V-BLAST receiver that cancels co-channel interference (CCI), based on reliability normalization over frequency-selective channels, in log-likelihood ratio (LLR) sense. The performance has been evaluated in the exponential decay channel model with various normalized rms delay spread and different filter taps. It is also compared with the ordered successive interference cancellation-decision feedback equalizer (OSIC-DFE). Simulation results show that the performance of the proposed receiver with (2,1) is close to OSIC-DFE with (6,3) at normalized rms delay spread 0.5 symbol periods.