V-BLAST系统中一种新的稳健的检测算法  

Novel robust detection algorithm for V-BLAST systems

作　　者：战金龙[1] 廖桂生[1] 刘宏清[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《系统工程与电子技术》2007年第5期710-712,共3页Systems Engineering and Electronics

基　　金：国家自然科学基金(60172028);新世纪优秀人才基金资助课题(NCET-04-0947)

摘　　要：V-BLAST系统有着非常高的频谱利用率,可以显著地提高系统容量。绝大多数的V-BLAST检测算法都要求接收端完全已知信道,如果信道有误差,性能会恶化。考虑到实际中的信道误差的影响,提出了一种基于子空间的稳健的检测算法,仿真结果表明:在信道估计有误差的情况下,该方法性能优于传统ZF算法和MMSE算法。V-BLAST has demonstrated very high spectral efficiency, and can improve system capacity dramatically. However, the most of detection algorithms for V-BLAST need perfect channel information at the receiver. But, in the real system there exist the channel estimation errors which bring the degradation of system performance. Aiming at this point, according to subspace theory, a new V-BLAST detection algorithm which considers the channel estimation error is proposed. The performance merits of the proposed algorithm is confirmed by corroborating simulations and compared with ZF and MMSE algorithms.

关 键 词：V-BLAST 稳健性 子空间理论 信道估计误差 

分 类 号：TN92[电子电信—通信与信息系统]