无线电通信技术2017，Vol.43Issue(3)：49-52,4.DOI:10.3969/j.issn.1003-3114.2017.03.12
一种降低SC-FDMA信号峰均比的低复杂度方法
A Low-complexity Method for Reducing PAPR of SC-FDMA Signals
摘要
Abstract
Considering the drawbacks of existing methods such as the high computational complexity and the need to introduce excess bandwidth,a simple and flexible peak-to-average power ratio (PAPR) reduction method without excess bandwidth is proposed after a deep analysis on the reason of forming large peaks of single-carrier frequency division multiple access (SC-FDMA) signals.The proposed method transforms the outer constellation points of the constellation which causes the peak power of the SC-FDMA signal to be larger than a given value into inner points at the cost of introducing very few error bits.By channel decoding at the receiver,the number of introduced error bits caused by constellation transformation can be greatly reduced.The proposed scheme has very low computational complexity without excess bandwidth and can reduce the PAPR of SC-FDMA signals effectively.关键词
单载波频分多址/峰均比/误比特/低复杂度Key words
single-carrier frequency division multiple access (SC-FDMA)/peak-to-average power ratio (PAPR)/error bit/low complexity分类
信息技术与安全科学引用本文复制引用
纪金伟,贾斐..一种降低SC-FDMA信号峰均比的低复杂度方法[J].无线电通信技术,2017,43(3):49-52,4.基金项目
河北自然科学基金项目(F2014210123) （F2014210123）
