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A Novel Detection Algorithm Using the Sorted QR Decomposition Based on Log-Likelihood Ratio in V-BLAST Systems

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6 Author(s)
Hyunseok Lee ; Sch. of Eng., Inf. & Commun. Univ., Daejeon ; Hyoungsuk Jeon ; Jihwan Choi ; Wonsop Kim
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In this paper, we propose a novel detection algorithm using log-likelihood ratio (LLR) to detect signals in V-BLAST systems. This algorithm utilizes the sorted QR decomposition (SQRD) of the channel matrix, and applies LLR to determine the order of detection. Simulation results show that the proposed algorithm provides a better performance than the conventional SQRD with a few additional computations. Approximately, the average BER performance of our algorithm is better than that of the conventional SQRD algorithm by 6 dB for BPSK and by 2 dB for QPSK respectively at 10-3 target BER

Published in:

Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on

Date of Conference:

22-24 Sept. 2006