Phase-coherent communications without explicit phase tracking

Author
Song, Heechun
Hodgkiss, William S.
Van Walree, Paul
Date Issued
2010
Permalink
http://hdl.handle.net/20.500.12242/762
https://publications.ffi.no/123456789/762
DOI
10.1121/1.3466860
Collection
Articles
Description
Song, Heechun; Hodgkiss, William S.; Van Walree, Paul. Phase-coherent communications without explicit phase tracking. Journal of the Acoustical Society of America 2010 ;Volum 128.(3) s. 969-972
530476.pdf
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Abstract
Phase-coherent communications typically requires a reliable phase-tracking algorithm. An initial phase estimate with training symbols allows a receiver to compensate for a motion-induced Doppler shift. Following the training period, however, explicit phase tracking can be avoided in time reversal communications that has been implemented on a block-by-block basis to accommodate time-varying channels. This is accomplished by a smaller block size and adaptive channel estimation using previously detected symbols on a symbol-by-symbol basis. The proposed time reversal approach without explicit phase tracking is demonstrated using experimental data (12–20 kHz) in shallow water
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