Shallow water acoustic networks
IEEE Communications Magazine
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An OFDM-based transmission scheme for underwater acoustic multimedia
WSEAS TRANSACTIONS on COMMUNICATIONS
An OFDM-based underwater acoustic multimedia system
MUSP'09 Proceedings of the 9th WSEAS international conference on Multimedia systems & signal processing
Underwater Acoustic Multimedia Communication Based on MIMO---OFDM
Wireless Personal Communications: An International Journal
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In this paper, we present a power assignment mechanism which is suitable for orthogonal frequency division multiplexing (OFDM)-based underwater acoustic communication system. An essential feature of this scheme is that higher power is allocated to the information that requires higher quality of service. To achieve the purpose of maximum resource utilization, or minimum total transmission power, we also incorporate unequal error protection and adaptive modulation techniques into the proposed power assignment scheme. Specifically, we employ high power, low level modulation, and high level error protection scheme for messages that dictate stringent bit error rate (BER). For a practical underwater acoustic communication scenario, a simulation has been carried out to verify proper functioning of the proposed scheme.