一种降低OFDM信号峰平功率比的新方案  

A Novel Peak-average-Power Ratio Reduction Scheme for OFDM Signal

作　　者：应小凡[1] 

机构地区：[1]浙江财经学院信息学院,浙江杭州310016

出　　处：《信息安全与通信保密》2010年第3期63-65,共3页Information Security and Communications Privacy

基　　金：浙江省教育厅科研计划一般项目资助(编号:20060142)

摘　　要：提出一种基于子块幅度加权处理降低正交频分复用(OFDM)信号峰值平均功率比的新方法。在确保性能满足系统需求的条件下,通过预设优化处理门限进行循环移位优化,从而大大降低了算法的复杂度。研究与仿真结果表明,基于子块幅度加权的循环移位优化方法可以有效降低OFDM信号峰值平均功率比,且具有复杂度低、处理灵活、无需边信息等优点。Based on sub-block envelop scaling,a novel scheme of Peak-to-Average Power Ratio（PAPR） reduction for Orthogonal Frequency Division Multiplex（OFDM） signal is proposed.Under the precondition that the performance could meet the requirement of the system,the threshold is presetted and circulation shift optimization is done to reduce the PAPR of OFDM signal,thus the processing complexity is greatly decreased.Study and simulation show that the proposed scheme could effectively reduce the PAPR of OFDM signal and has such advantages as low complexity,high flexibility and with no side information.

关 键 词：正交频分复用 峰值平均功率比 幅度加权 循环移位优化 

分 类 号：TN919.3[电子电信—通信与信息系统]