一种改进的大规模MIMO预编码算法  

Improved precoding algorithm for massive MIMO

作　　者：王军[1] 戴建新[2] 程崇虎[1] 汪鹏[1] 李莎[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003 [2]南京邮电大学理学院,江苏南京210023

出　　处：《南京邮电大学学报（自然科学版）》2016年第6期30-33,38,共5页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：江苏省博士后科研资助计划(1501073B);南京邮电大学自然科学基金(NY214108)资助项目

摘　　要：大规模MIMO(Multiple-Input Multiple-Output)是基站装有大量天线,同时服务多个用户的通信方式,其用户间的干扰十分严重。文中通过结合迫零预编码和块对角化预编码算法,提出一种优化的块对角化算法。在大规模MIMO系统中,利用文中提出的新的预编码算法,可以较好地降低用户间的干扰,提高系统整体性能。通过仿真结果可以看出,文中算法比块对角化算法的误码率性能有显著提高。Massive multiple-input multiple-output （MIMO） refers to the idea equipping cellular base stations with a very large number of antennas, and is a communication way for serving several users. But the interference between users is becoming more and more serious. A new pre-coding algorithm is proposed by combining zero forcing （ZF） with block diagonalization （BD） algorithms. In the massive MIMO system, the interference is reduced between users and the overall performance of the system is improved by the proposed algorithm. Simulation results show that performances on bit error rates can be improved by the algorithm compared with BD algorithm.

关 键 词：大规模多输入多输出 预编码算法 误码率 块对角化算法 

分 类 号：TN929.5[电子电信—通信与信息系统]