Double-differential coded M-ary direct sequence spread spectrum for mobile underwater acoustic communication system

被引：10
作者：
Yang, Guang
Zhou, Feng
Lou, Yi [1 ]
Qiao, Gang
Ahmed, Niaz
He, Yuanan
机构：
[1] Harbin Engn Univ, Acoust Sci & Technol Lab, Harbin 150001, Peoples R China
来源：
APPLIED ACOUSTICS | 2021年 / 183卷 / 183期
基金：
中国国家自然科学基金;
关键词：
M-ary direct sequence spread spectrum; Double-differential coding; Underwater acoustic communication; Communication effectiveness; Mobile communication; EQUALIZATION; DCSK;
D O I：
10.1016/j.apacoust.2021.108303
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper presents a double-differential coded M-ary direct sequence spread spectrum (DD-MSS) underwater acoustic communication system to overcome problems of both low signal-to-noise ratio and severe Doppler effect. The system is very efficient in the challenging band-limited underwater acoustic channel and has many applications, particularly in which the transmitter and the receiver are mobile. Given that the bit error rate (BER) performance is unaffected, this scheme results in a significant improvement in the data rate compared to direct sequence spread spectrum (DSSS) communication systems. The MSS system uses M pseudo-random codes to represent k bits of information and offers advantages of a higher spectral efficiency and a lower energy consumption than the DSSS system. Both simulations and experiments are performed, and the results are discussed in the paper for the performance evaluation of the proposed scheme. The results demonstrate a better BER performance using the DD-MSS in a mobile environment. (C) 2021 Elsevier Ltd. All rights reserved.
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页数：12
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