计算机技术与发展2017，Vol.27Issue(1)：34-38,5.DOI:10.3969/j.issn.1673-629X.2017.01.008
基于HPA非线性的大规模MIMO预编码算法
Linear Precoding in Massive MIMO Based on Nonlinear High-power Amplifier
摘要
Abstract
Large scale MIMO has the advantages of high energy efficiency and spectrum utilization,but it also brings some problems be-cause of cheap hardware use,such as high power amplifier nonlinearity,etc. . When the high power amplifier in the nonlinear regime,the amplitude and phase of amplified signal will produce error,thereby leading to the errors of signal and the desired signal received by users and reduce the performance of the system. The deficiency of the traditional precoding algorithm is studied when the high power amplifier is nonlinear. An improved pre-coding algorithm is presented according to the impact of traditional algorithm and nonlinear high power amplifier on the signal. The simulation results show that the algorithm is improved significantly in bit error rate and capacity performance compared with block of diagonalization pre-coding algorithm and forced zero pre-coding algorithm,especially better in the scene of high signal to noise ratio. So it is concluded the algorithm is able to reduce the influence of nonlinearity of high power amplifier on the per-formance of the system.关键词
大规模MIMO/高功率放大器/预编码算法/误码率/非线性Key words
massive MIMO/HPA/pre-coding algorithm/bit error rate/nonlinear分类
信息技术与安全科学引用本文复制引用
王军,戴建新,程崇虎,汪鹏,李莎..基于HPA非线性的大规模MIMO预编码算法[J].计算机技术与发展,2017,27(1):34-38,5.基金项目
江苏省博士后科研资助计划(1501073B) （1501073B）
南京邮电大学自然科学基金(NY214108) （NY214108）
