An application of the differential spread-spectrum technique in mobile underwater acoustic communication

A direct sequence/binary differential phase-shift keying underwater acoustic communication technique based on differential coherent demodulation is proposed. Differential coherent demodulation is adopted at the receiving terminal to overcome the difficulty of estimating the carrier in underwater aco...

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Veröffentlicht in:	Science China. Information sciences 2011-10, Vol.54 (10), p.2190-2198
Hauptverfasser:	Yin, JingWei, Zhang, Xiao, Sun, LiQiang, Mei, JiDan
Format:	Artikel
Sprache:	eng
Schlagworte:	Carrier frequencies Channels Coherence Computer Science Demodulation Frequency drift Information Systems and Communication Service Lakes Phase error Phase shift keying Receiving Research Papers Spread spectrum transmission Terminals Underwater acoustics Underwater communication 差分相干解调差分相移键控应用扩频技术水声通信移动通信技术频率漂移
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Beschreibung
Zusammenfassung:	A direct sequence/binary differential phase-shift keying underwater acoustic communication technique based on differential coherent demodulation is proposed. Differential coherent demodulation is adopted at the receiving terminal to overcome the difficulty of estimating the carrier in underwater acoustic communication and overcoming the frequency and phase error resulting from carrier frequency drift. Anti-multipath, antiDoppler, low-error-rate, effective and robust features for a complex underwater acoustic channel were verified in a lake experiment.
ISSN:	1674-733X 1869-1919
DOI:	10.1007/s11432-011-4399-0