Turbo-BLAST系统中天线选择和功率分配算法  

Transmit antenna selection and power allocation algorithm for Turbo-BLAST system

作　　者：陈小敏[1] 徐大专[1] 虞湘宾[1] 朱秋明[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,江苏南京210016

出　　处：《电波科学学报》2009年第3期533-536,共4页Chinese Journal of Radio Science

基　　金：江苏省自然科学基金(BK2007192);南航引进人才基金(S0855-041)

摘　　要：提出一种适用于Turbo-BLAST系统的自适应天线选择和功率分配算法,所提算法以误比特率为优化目标,并且考虑了信道估计误差的影响。在总功率约束条件下,采用所提算法进行天线选择和自适应功率分配,并利用软干扰抵消算法对接收信号进行迭代检测,以进一步改善系统性能。仿真结果表明:采用所提算法可以显著改善系统的误比特率性能。An adaptive transmit antenna selection and power allocation scheme for Turbo-BLAST system is proposed. The proposed scheme aims at minimizing the bit error rate （BER） of Turbo-BLAST system and takes the errors of channel estimation into account. Subjected to the total transmit power constraint, the proposed scheme is used to select transmit antenna subset and allocate proper power for the selected antennas. The soft interference calculation scheme is used to detect signal at the receiver in order to improve BER performance further. Simulation results show that the proposed algorithm is effective to improve BER performance for Turbo-BLAST system.

关 键 词：MIMO Turbo—BLAST 天线选择和功率分配 不完全信道状态信息 迭代检测 

分 类 号：TN929.5[电子电信—通信与信息系统]