Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 12, 2015
Patent Application Number
13795971
Date Filed
March 12, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for mobile underwater acoustic communications includes double differentially (DD) encoding a communication signal to produce a DD-encoded communication signal, applying direct sequence spread spectrum (SS) to the DD-encoded signal to produce a DD-SS communication output signal, and transmitting the DD-SS communication output signal. The method i) increases the SNR via processing gain, ii) eliminates the ISI through multipath suppression, and iii) enables bandwidth efficiency improvement via data multiplexing. The method is shown capable of facilitating simple receiver processing and offering performance robustness against unpredictable channel fluctuations.
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