数字波束成形中峰均比抑制方法的研究  

Method on PAPR reduction in digital beam-forming

作　　者：刘璐[1,2] 赵国庆 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071 [2]西安邮电大学通信与信息工程学院,陕西西安710121

出　　处：《通信学报》2018年第2期114-121,共8页Journal on Communications

基　　金：陕西省科技研究发展(攻关)计划基金资助项目(No.2016YFJH2-08)~~

摘　　要：数字波束成形技术是5G通信中的关键技术之一。然而,数字波束成形中过高的峰均比会造成信号发射端功率放大器进入非线性工作区域。针对现阶段概率类方法中的选择性映射类算法带宽利用率低和运算复杂度高的问题,提出一种基于MUSIC算法的盲选择性映射方法。该方法不用传输边带信息,就可提高频带的利用率;同时,在运算复杂度和峰均比的抑制效果上,所提方法较选择性映射算法有一定的改善。Digital beam-forming technology is one of the key technologies in 5G communication. However, the high peak-to-average power ratio in digital beam-forming would make the power amplifier work in the nonlinear region. Nowadays, the solutions to the high peak-to-average power ratio, such as selected mapping, embedded side information selected mapping have some faults： the complexity is high, and the utilization of the bandwidth is low. A blind selected mapping method to reduce the high peak-to-average power ratio based on MUSIC algorithm was proposed. In this meth-od, the side information was omitted, so the utilization of the bandwidth was improved. Simultaneously, the result of the peak-to-average power ratio reduction and the complexity is much more enhanced.

关 键 词：数字波束成形 峰均比抑制 选择性映射算法 MUSIC算法 

分 类 号：TN911[电子电信—通信与信息系统]