摘要
对分布式多输入多输出(MIMO)系统的下行发射天线选择算法进行研究,提出了基于范数和相关性的天线选择算法(NCBA)及其改进算法(NCBA-M),并分别与基于范数的天线选择算法(NBA)以及基于大尺度衰落的天线选择算法(LFBA)进行性能比较.仿真结果表明,当同一端口发送天线没有相关性时,NBA、LFBA、NCBA与最优天线选择算法性能接近.但是,当同一个端口中发送天线存在很强相关性时,NBA、LFBA算法会导致较高的容量损失,而NCBA-M算法仍然具有接近最优选择算法的性能.
A norm and correlation based antenna selection algorithm （NCBA） and its modified version （NCBA-M） are proposed for the downlink transmit antenna selection in distributed multiple input multiple output（MIMO）systems. The performance of the proposed algorithms is compared with that of norm based antenna selection algorithm （NBA） and large scale fading based antenna selection algorithm （LFBA） respectively. The simulation result shows that when no correlation of the transmit antenna correlation in the same antenna port is considered, NBA, LFBA and NCBA have similar performance to the optimal antenna selection algorithms. However, when transmit antennas in the same port have strong correlations, NBA and LFBA result in a high capacity loss, but NCBA-M can still approach the performance of optimal antenna selection algorithm.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2007年第3期50-53,共4页
Journal of Beijing University of Posts and Telecommunications
关键词
分布式多输入多输出系统
分布式天线系统
天线选择
distributed multiple input multiple output systems
distributed antenna systems
antenna selection
