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		题名	作者	年代	出处	被引量
	1	Orthogonal M-ary code shift keying spread spectrum underwater acoustic communication显示文摘M-ary and code shift keying(CSK)spread spectrum is generally applied to overcoming the spreading gain versus data rate limitation in underwater acoustic(UWA)communications.In addition,the concept of orthogonal M-ary CSK is introduced to UWA communication to gain higher rates.We propose a scheme employing dual-orthogonal-channel M-ary and CSK spread spectrum UWA communication based on Gold sequences owing large code set and good self and cross correlation.The modulation and demodulation scheme of the orthogonal M-ary CSK is derived algebraically and the factors critical to its performance are discussed.Furthermore,its bit error rate(BER)curve is evaluated via simulations and compared with the dual-channel M-ary CSK.Finally,the validity of the simulations is verified in tank experiments.1096.8 bps data rate of the proposed communication scheme is realized for 10 kbits data volume with no error.Overall through deduction,numerical simulation,and experiment,it is shown that the proposed method offers significantly improved performance.	YU Yang ZHOU Feng QIAO Gang NIE Donghu	2014	Chinese Journal of Acoustics2014，33，3：	6

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