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DEPARTMENT OF ELECTRICAL ENGINEERING Graduate Seminar Guest Speaker Dr. Paul Gendron Space and Naval Warfare Systems Command (SPAWAR) A high frequency broadband acoustic channel estimation error analysis and the determination of useful SNRs for phase coherent communications in St. Margaret's Bay, Nova Scotia. Friday, February 19, 2010 2pm – 109 KNOX ABSTRACT The shallow water acoustic communication channel exhibits delay and Doppler spreading that limits communication rates and places severe demands on communication receiver algorithms. The receiver must estimate jointly the time-varying channel response over the duration of the communication packet along with the information stream. Estimation of channel components for multiple surface interacting paths must be appropriately sensitive at short time scales. Even a single rough bottom interacting arrival when coupled with platform motion implies severely degraded path coherence for the high frequency broadband channel. In this talk we show that an effective signal to noise ratio is a useful way of characterizing
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