Signal detection using log-likelihood ratio based sorting QR decomposition for V-BLAST systems

被引：0
|
作者：
Lee, Hyunseok [1 ]
Jeon, Hyoungsuk [1 ]
Jung, Hoiyoon [1 ]
Lee, Hyuckjae [1 ]
机构：
[1] ICU, Sch Engn, Taejon 305732, South Korea
来源：
2007 IEEE 65TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6 | 2007年
关键词：
D O I：
10.1109/VETECS.2007.390
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we propose a novel detection algorithm using Log-Likelihood Ratio (LLR) to detect signals for V-BLAST systems. This algorithm utilizes the sorting QR decomposition (SQRD) of the channel matrix, and applies LLR to determine the order of detection. Simulation results show that the proposed LLR-based MMSE-SQRD algorithm provides a better performance than the conventional SNR-based MMSE-SQRD algorithm with a few additional computations. Approximately, the average BER performance of our algorithm is better than that of the conventional SNR-based MMSE-SQRD algorithm by 4dB at 10(-4) target BER.
引用
收藏
页码：1881 / 1885
页数：5
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