一种改进的限幅滤波降低PAPR算法  

Improved Clipping and Filtering Algorithm Applied to Reduce PAPR

作　　者：韩东升[1,2] 杨维[2] 刘薇[2] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]北京交通大学电子信息工程学院,北京100044

出　　处：《北京邮电大学学报》2014年第4期44-48,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(51274018;61302106);国家科技支撑计划项目(2013BAK06B03);中央高校基本科研业务费专项资金资助项目(2014MS100)

摘　　要：针对传统正交频分复用降低峰均功率比算法计算复杂度较高,失真比较严重的问题,提出了一种改进的限幅滤波算法,该算法将正交频分复用信号划分为奇信号与偶信号来分别进行限幅滤波操作.仿真结果表明,与传统的限幅滤波算法相比,该算法在降低峰均功率比(PAPR)的同时,具有较低的计算复杂度,同时能较好地滤除带外干扰,显著提高系统的误码率的性能.An improved clipping and filtering algorithm was proposed to improve the currently used algo- rithms for reducing peak-to-average power ratio （PAPR） of orthogonal frequency division multiplexing （OFDM） with high computational complexity and serious distortion. The algorithm divides OFDM signals into odd signals and even signals. And the two kinds of signals are clipped and filtered. Simulation shows that, in comparison with currently used clipping and filtering algorithms, the algorithm is with better PAPR performance with lower computational complexity and filters in-band interference more obviously. The bit error rate performance of the system can be improved through the algorithm.

关 键 词：峰均功率比 限幅 失真 噪声消除 

分 类 号：TN929.5[电子电信—通信与信息系统]