Abstract
In this paper, based on QR decomposition, an improved detection algorithm for quasi-orthogonal space-time block code (QOSTBC) using square QAM constellation is presented. In the proposed method, by executing single complex symbol twi-detection for each block and selecting the optimal result, the BER performance is much better than that of the linear receivers. Compared with conventional maximum-likelihood (ML) decoding, though the bit error rates (BER) performance is with a slight loss, the improved detection algorithm reduces the decoding complexity significantly. The derivation and simulation results of the proposed algorithm are presented.
Publisher
Trans Tech Publications, Ltd.