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Cyclic shift keying spread spectrum underwater acoustic communication

He Cheng-Bing Huang Jian-Guo Han Jing Zhang Qun-Fei

Cyclic shift keying spread spectrum underwater acoustic communication

He Cheng-Bing, Huang Jian-Guo, Han Jing, Zhang Qun-Fei
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  • Abstract views:  4224
  • PDF Downloads:  1257
  • Cited By: 0
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  • Received Date:  28 August 2008
  • Accepted Date:  20 March 2009
  • Published Online:  20 December 2009

Cyclic shift keying spread spectrum underwater acoustic communication

  • 1. 西北工业大学航海学院,西安 710072

Abstract: Aimed at solving the problem of low data rate of direct sequence spread spectrum underwater acoustic communication and that of complexity of the receivers of M-ary spread spectrum underwater acoustic communication, cyclic shift keying spread spectrum underwater acoustic communication is proposed based on the good characteristic of spread sequences. At the transmitter, base waveform is cyclically shifted according to the input information. At the receiver, only one correlator is used to estimate the time delay and decode. Multi-code spread spectrum based on cyclic shift is presented. Lake experiments at both middle and long range were conducted for the proposed methods. Single and two code cyclic shift keying underwater acoustic communication were realized in the range of 15 km and the bandwidth of 2 kHz. The data rate was 438 bit/s with bit error ratio around 10-2—10-5. The result demonstrated the bandwidth efficiency and low complexity of the proposed methods and the applicability for long range underwater acoustic communication and multi-user underwater acoustic communication network.

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