摘要
正交频分复用(OFDM)技术广泛应用于无线传输系统,是武器协同数据链的核心技术之一。为了能更好地抑制发送信号的峰值平均功率比(PAPR)而又保证接收端误码率性能,提出一种OFDM中基于改进的部分传输序列与压缩感知技术相结合的混合算法,设计了算法的框架和实现步骤。同时开展发送端削峰处理和接收端恢复操作,最大程度地利用压缩感知技术的恢复框架,增强了PAPR降低幅度。仿真结果显示,该混合算法将部分传输序列与压缩感知技术的优点相结合,PAPR至少降低1dB,取得了较好的PAPR抑制效果。
The orthogonal frequency division multiplexing(OFDM)is widely used in wireless system and becoming a key technology for weapon cooperation data link.A hybrid peak average power ratio(PAPR)reduction algorithm is proposed.It is based on modified partial transmission sequence(PTS)and compressed sensing(CS)in OFDM for further reducing PAPR and improving bit error rate performance.The framework and implementation steps of the algorithm are also proposed,which includes PAPR reduction at transmitter and CS recovery at receiver.Simulated results show that the algorithm combines the advantages of CS and PTS,reducing the peak-average power ratio by at least 1dB,and achieving better PAPR performance.
作者
曹渊
崔东华
刘兴辉
CAO Yuan;CUI Donghua;LIU Xinghui(Naval Research Academy, Beijing 102442,China;School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2020年第6期1151-1156,共6页
Acta Armamentarii
关键词
正交频分复用
峰值平均功率比
部分传输序列
压缩感知
orthogonal frequency division multiplexing
peak average power ratio
partial transmission sequence
compressed sensing
