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A Broadband Underwater Acoustic Modem Implementation Using Coherent OFDM

Overview Multicarrier modulation in the form of Orthogonal Frequency Division Multiplexing (OFDM) has prevailed in recent broadband wireless systems over radio channels. In the senior design project discussed in this paper, the authors have implemented an acoustic OFDM modem that transmits digital data through sound propagation. This paper demonstrates OFDM transmission first in air, and then in water. The authors found that the underwater channel is much more complex than the air channel, and careful signal designs are needed for underwater transmissions. The authors have also handled another difficulty incurred by sampling rate mismatches at the transmitter and the receiver due to low-cost sampling devices.

Further White Paper Details
Publisher	University of Connecticut	File Format	PDF
Date Published	February 2007	Downloads	1
Format	White Papers
Topics	Wireless LAN, Broadband, Mobile - Wireless Communications

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