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Improved Detection Scheme Based on Lattice-Reduction and Threshold Algorithm in MIMO-OFDM Systems
Jae-Jeong KIM Hyoung-Kyu SONG
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/06/01
Online ISSN: 1745-1337
Type of Manuscript: LETTER
Category: Mobile Information Network and Personal Communications
MIMO-OFDM, V-BLAST, QR-decomposition, lattice reduction, QRD-M detection,
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In this letter, an enhanced detection scheme using threshold and lattice-reduction algorithm is proposed. The first step of the proposed detection scheme finds another basis channel matrix H' which has good properties from the channel matrix H by using lattice-reduction algorithm. And QRD-M detection scheme using threshold algorithm is executed in the next step. Simulation results show that the proposed method has better performance than the conventional QRD-M detection scheme at high SNR. Also, it reduces candidate symbols because of the threshold algorithm.