Rate-range for an FH-FSK acoustic modem

Authors:
Nathan Parrish;Sumit Roy;Warren L. J. Fox;Payman Arabshahi
Affiliations:
University of Washington, Seattle, WA;University of Washington, Seattle, WA;University of Washington, Seattle, WA;University of Washington, Seattle, WA
Venue:
Proceedings of the second workshop on Underwater networks
Year:
2007

Citing 2
Cited 0

Wide area ocean networks: architecture and system design considerations

WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks
On the relationship between capacity and distance in an underwater acoustic communication channel

WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks

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Abstract

Signals transmitted through underwater channels experience attenuation due to dissipation of acoustic energy by spreading as well as by absorption. The path loss due to absorption is found to be highly dependent upon the frequency. Ambient noise, which also greatly affects accurate reception of the signal, is also highly dependent upon frequency. For these reasons, the received SNR cannot be assumed to be constant over wideband acoustic signaling schemes. In this paper we determine the (signaling) rate vs. range curves for a FH-FSK modem considering the frequency selective nature of signal attenuation in an acoustic medium.