A low complexity V-BLAST/STBC detection algorithm for MIMO system

Abstract

In this paper, a new low complexity detection algorithm for V-BLAST/STBC scheme based on QR decomposition, denoted as low complexity QR (LC-QR), is presented. The performance of the proposed LC-QR decomposition detection algorithm in V-BLAST/STBC transceiver scheme is investigated with other MIMO systems, such as ZF, MMSE and QR decomposition schemes. It is shown that the BER performance in V-BLAST/STBC scheme is better than V-BLAST scheme while its system capacity is higher than orthogonal STBC scheme when the LC-QR is exploited. © 2012 Springer Science+Business Media.