Power allocation algorithm of multiple space-time transmit diversity in MIMO wireless systems
MIMO无线系统多空时发射分集功率分配算法

Concerning the symbol detection of multiple Space-Time Transmit Diversity (STTD) in Multiple-Input Multiple-Output (MIMO) wireless systems, an efficient power allocation algorithm was presented. Based on the QR-based successive detection, the proposed algorithm required only a few feedbacks Channel Status Information (CSI) from the receiver to decompose QR matrix. The statistical property of the R matrix was approved and the closed-form upper bound for the Bit Error Rate (BER) metric was obtained. By minimizing the upper bound, an optimal power allocation scheme was proposed. Detailed simulation results and comparisons with the existing algorithms prove that, not only the experimental results of the proposed algorithm coincide with the theoretical results completely but also it is of better BER.