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Channel-Adaptive Detection Scheme Based on Threshold in MIMO-OFDM Systems
Seung-Jun YU Jang-Kyun AHN Hyoung-Kyu SONG
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/06/01
Online ISSN: 1745-1361
Type of Manuscript: LETTER
Category: Fundamentals of Information Systems
V-BLAST, QRD-M, MIMO-OFDM, condition number,
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In this letter, an improved channel-adaptive detection scheme based on condition number combined with a QRD-M and CLLL algorithms is presented for MIMO-OFDM systems. The proposed scheme estimates the channel state by using the condition number and then the number of layers for the QRD-M is changed according to the condition number of channel. After the number of layers is determined, the proposed scheme performs the combined QRD-M and CLLL. Simulation results show that the BER curves of the proposed scheme and QRD-M using CLLL have similar performance. However, the complexity of the proposed scheme is about 27% less than QRD-M detection using CLLL.