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| A Robust Iterative Detection Algorithm for V-BLAST over Spatially Correlated Channels |
| Jing Xiao-rong①; Zhou Zheng-zhong①; Zhang Tian-qi② |
| ①School of Communication and Information Engineering, University of Electronic Science and Technology. of China, Chengdu 610054, China;②School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China |
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Abstract Utilizing the Householder transformation, and combining with the WY representation, a Modified Householder QR-Decomposition (M-H-QRD) algorithm is proposed firstly. In contrast to the sorted QRD (S-QRD) detection algorithm, the M-H-QRD detection algorithm has robust numerical property. Then an iterative detection algorithm for V-BLAST is proposed based on M-H-QRD. The simulation results show that the iterative detection algorithm can achieve obvious performance improvement over the S-QRD detection algorithm and the M-H-QRD detection algorithm. In contrast to the standard V-BLAST algorithm, the iterative detection algorithm has almost the same detection performance as it for high SNR, and outperforms it in the moderate and low SNR region with more robust numerical property.
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Received: 04 August 2008
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2009, Vol. 31 
