广西师范大学学报（自然科学版）Issue(3)：6-11,6.
一种改进的基于 FFT/IFFT 预留子载波的PAPR 抑制算法
An Improved Tone Reservation Algorithm Based on FFT/IFFT for PAPR Reduction
摘要
Abstract
In OFDM systems,signals with a large PAPR may bring serious distortions,resulting in dra-matic reduction of system BER performance.Tone reservation scheme can reduce the PAPR,but has a high computational complexity,Tone reservation method based on FFT/IFFT can reduce computational complexity,but can’t suppress the PAPR effectively and the lager amplification factor deteriorates BER performance.An improved tone reservation method based on FFT/IFFT is proposed to restrain the high PAPR.The reserved subcarrier’s peak cancelling signal is multiplied by different correction phase se-quences and the signal with minimum PAPR among these alternative signals is selected to transmit. Simulation results show that,compared with the original algorithm,the proposed method can provide a-bout 4dB PAPR performance gains with comparable computational complexity.关键词
正交频分复用/峰均功率比/预留子载波/修正相位序列Key words
OFDM/PAPR/tone reservation/correction phase sequence分类
信息技术与安全科学引用本文复制引用
贺冬冬,李传起..一种改进的基于 FFT/IFFT 预留子载波的PAPR 抑制算法[J].广西师范大学学报（自然科学版）,2014,(3):6-11,6.基金项目
广西高校自然科学基金重点项目(201202ZD010) （201202ZD010）
桂林市科学研究与技术开发计划课题(20120104-18) （20120104-18）
