【作者】 徐凯； 罗涛； 尹长川； 乐光新；

【Author】 Xu Kai Luo Tao Yin Changchuan Yue GuangxinTelecommunication Engineering School, BUPT, Beijing, 1000876

【机构】 北京邮电大学电信工程学院；

【摘要】 本文提出一种在接收端结合最大比合并的发送天线选择新算法。该算法中,发送端从N个可用天线中选择信道增益最佳的L个天线,而接收端不进行天线选择并进行最大比合并(MRC)。并对该算法在准静态瑞利衰落信道的成对差错(PEP)性能进行了深入地分析。理论分析和仿真试验证明,尽管发送端天线选择对MIMO系统的分级阶数会造成一定程度的损伤,但同不进行天线选择(L;M)相比,应用该算法仍能获得较大的分级增益,并能明显提高相同频谱效率和相同分集阶数条件下空时码的性能。更多还原

【Abstract】 In this paper we propose a scheme combining transmit antenna selection and maximal-ratio combining (MRC) at the receiver. In this scheme L antennas are chosen for transmission among all available transmit antennas N and maximal-ratio combining is performed at the receiver side. The pairwise error probability (PEP) of the scheme is derived in quasi-static Rayleigh fading channels. The analysis and simulation results show that, after L transmit antennas selection among all N available transmit antennas, though the diversity order is decreased to a certain extent, more diversity again can still be obtained with our scheme compared with the case of no antenna selection.更多还原