An underwater acoustic communications system utilizes phase coherent modulation and demodulation in which high data rates are achieved through the use of rapid Doppler removal, a specialized sample timing control technique and decision feedback equalization including feedforward and feedback equalizers....http://www.google.fr/patents/US5301167?utm_source=gb-gplus-shareBrevet US5301167 - Apparatus for improved underwater acoustic telemetry utilizing phase coherent communications
Apparatus for improved underwater acoustic telemetry utilizing phase ...
