Selected-Mapping Peak-to-Average Power Reduction Method with Orthogonal Pilot Sequences in Underwater Acoustic OFDM System Without Side Information  

作　　者：QIAO Gang XING Siyu and ZHOU Feng 

机构地区：[1]Acoustic Science and Technology Laboratory,Harbin Engineering University,Harbin 150001,China [2]Key Laboratory of Marine Information Acquisition and Security(Harbin Engineering University),Ministry of Industry and Information Technology,Harbin 150001,China [3]College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150001,China

出　　处：《Chinese Journal of Electronics》2021年第1期160-163,共4页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.61431004, No.61571151, No.61501134)。

摘　　要：A novel Selected-mapping(SLM) Peak-to-average power ratio(PAPR) reduction scheme requires no Side information(SI) in Underwater acoustic(UWA)OFDM system is proposed. In the proposed scheme,every distinct phase sequence is represented by a unique Orthogonal comb pilot sequence(OPS), and the orthogonal properties of the OPSs are used to distinguish the index of phase sequences at the receiver. Therefore, the proposed scheme does not need to reserve bits for transmitting SI,so that the data rate can be raised. Simulation results show that the PAPR reduction performance has almost 0.5 d B gains comparing to the Conventional SLM(C-SLM)scheme and the Bit error ratio(BER) performance is approximately the same as the SLM scheme with perfect SI. Field experimental results also demonstrate that the proposed scheme can differentiate phase sequences,therefore significantly enhance the quality of the UWA OFDM communication system.

关 键 词：Underwater acoustic communication OFDM PAPR reduction Selected mapping 

分 类 号：TN929.53[电子电信—通信与信息系统]