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Published on: March 20, 2017
Space-frequency coded orthogonal signal-division multiplexing over underwater acoustic channels
Jing Han1, Wentao Shi1, Geert Leus2
1School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China hanj@nwpu.edu.cn, swt@nwpu.edu.cn.
Abstract:
Orthogonal signal-division multiplexing (OSDM) is a newly emerged modulation scheme which provides a generalized framework unifying conventional orthogonal frequency-division multiplexing (OFDM) and single-carrier frequency domain equalization. In this letter, a space-frequency block coding (SFBC) scheme based on OSDM is proposed for time-varying underwater acoustic channels. The receiver processing includes Doppler compensation, channel estimation, space-frequency decoding, and equalization. Simulation and experimental results demonstrate its superiority over the existing SFBC-OFDM counterpart.
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