太赫兹科学与电子信息学报2016，Vol.14Issue(4)：535-540,6.DOI:10.11805/TKYDA201604.0535
分布式MIMO系统发送天线选择与预编码联合设计
Joint transmit antenna selection and pre-coding in distributed MIMO systems
摘要
Abstract
To suppress the Co-Channel Interference(CCI) and increase the number of served users in multi-user distributed Multiple Input Multiple Output(MIMO) systems, a joint transmit antenna selection and pre-coding scheme is proposed based on the characteristics that there are a large amount of antennas at the base station in distributed MIMO systems. In the proposed scheme, downlink transmits antenna selection and Signal to Leakage and Noise Ratio(SLNR) pre-coding are combined together. On the one hand, it selects different antennas for each user to radically decrease the CCI. On the other hand, during the antenna selection process, antenna ports are firstly selected according to the trace of the channel sub-matrices. Then antennas which minimize the SLNR loss for each user are selected with an elimination method in order to make interference to other users as small as possible and further suppress the CCI. Compared with the optimal algorithm, the proposed algorithm shows great superiority on complexity with a capacity performance similar to the optimal algorithm. It can make the system provide service to more users than SLNR pre-coding under the same capacity constraint.关键词
多用户/分布式多入多出/同道干扰/发送天线选择/信漏噪比Key words
multi-user/Distributed Multiple Input Multiple Output/Co-Channel Interference/transmit antenna selection/Signal to Leakage and Noise Ratio分类
信息技术与安全科学引用本文复制引用
崔维嘉,郑娜娥,裴喜龙,陆杰青..分布式MIMO系统发送天线选择与预编码联合设计[J].太赫兹科学与电子信息学报,2016,14(4):535-540,6.基金项目
国家高技术研究发展计划资助项目(2012AA01A502,2012AA01A505) （2012AA01A502,2012AA01A505）
