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.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
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)
