物理学报2012，Vol.61Issue(23)：287-293,7.
M元码元移位键控扩频水声通信
M-ary code shift keying spread spectrum underwater acoustic communication
摘要
Abstract
Aiming at the low data rate of traditional direct sequence spread spectrum, M-ary spread spectrum and code shift keying un- derwater acoustic spread spectrum communication, a new combine method of M-ary code shift keying underwater acoustic spread spectrum communication is proposed based on the small Kasami sequence with good self and mutual correlation. Different sequence information and the same sequence code phase information are used in this method. The influences of self and mutual correlation func- tion on M-ary code shift keying underwater acoustic spread spectrum communication over gaussian and fading channel are analyzed. The performances under the two kinds of channels are simulated. The simulation shows that the ability for M-ary code shift spread spectrum to overcome the noise is better than for the direct sequence spread spectrum, M-ary spread spectrum and code shift keying spread spectrum. The comparative experiment is conducted to compare the M-ary spread spectrum, code shift keying spread spectrum and M-ary code shift keying spread spectrum in the pool. The M-ary code shift keying communication rate of 256.3 bps with no transmitting error in 104 bit data volume is realized.关键词
水声通信/扩频/M元/码元移位键控Key words
underwater acoustic communication/spread spectrum/M-ary/code shift keying分类
信息技术与安全科学引用本文复制引用
于洋,周锋,乔钢..M元码元移位键控扩频水声通信[J].物理学报,2012,61(23):287-293,7.基金项目
国家高技术研究发展计划（批准号：2009AA093601.2）、国防基础项目研究（批准号：B2420110007）和水声技术重点实验室基金（批准号：9140C200801110C2004）资助的课题. （）
