Lattice-Reduction-Aided Robust Detection for MIMO Systems with Channel Estimation Error

摘要：

In recently years, lattice-reduction (LR) has been proposed to improve the performance of linear and successive interference cancellation (SIC) detectors in MIMO systems. It is proved that LR-aided linear detectors collect the same diversity order as that exploited by the ML detector but with much lower complexity when perfect channel state information (CSI) is available at receiver side. However, in practice, CSI is always contaminated by channel estimation error. In this paper, we proposed MMSE based LR-aided robust linear and SIC detection schemes which are capable of improving the BER performance in the context of channel estimation error. Additionally, we derived the approximate value of error floor as a function of channel estimation error and proved the BER improvements of robust LR-aided MMSE(-SIC) detector on traditional LR-aided MMSE(-SIC) detector increase with the growing number of transmit and receive antennas. Simulation results validate the conclusion.

作者: Rui Chen Jiandong Li Wei Liu

作者单位: State Key Laboratory of Integrated Service Networks, Xidian University, Xian, China

会议类型: 国际会议

会议名称: 2010年无线通信与信号处理国际会议

会议地点: 上海

会议语种:英文

页码: 1-5

在线出版日期: 2010-10-20（万方平台首次上网日期，不代表论文的发表时间）