標題: | Adaptive two-stage GSC-based PIC detection for time-varying MIMO channels |
作者: | Lee, Yinman Wu, Wen-Rong 電信工程研究所 Institute of Communications Engineering |
關鍵字: | multiple-input multiple-output (MIMO);parallel interference cancellation (PIC);least-mean-square (LMS) algorithm;generalized sidelobe canceller (GSC) |
公開日期: | 1-四月-2008 |
摘要: | Adaptive parallel interference cancellation (PIC) has been recently proposed for the signal detection in multiple-input multiple-output (MIMO) systems. However, it suffers from error propagation when operated in time-varying channels. In this letter, an adaptive two-stage PIC with the minimum variance (MV) criterion is proposed to solve the problem. Adaptation with the MV criterion is realized with a decision feedback generalized sidelobe canceller (DFGSC). In the first-stage cancellation, a special structure involving dual DFGSCs is developed. All adaptation operations are implemented with the least-mean-square (LMS) algorithm. Simulations show that the proposed adaptive PIC detection can significantly outperform the conventional adaptive PIC detection in time-varying MIMO channel environments. |
URI: | http://dx.doi.org/10.1109/TWC.2008.060238 http://hdl.handle.net/11536/9482 |
ISSN: | 1536-1276 |
DOI: | 10.1109/TWC.2008.060238 |
期刊: | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS |
Volume: | 7 |
Issue: | 4 |
起始頁: | 1105 |
結束頁: | 1110 |
顯示於類別: | 期刊論文 |