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Chirp modulation, time-frequency transform, Rayleigh fading, digital communications, underwater communications, underwater modem, underwater acoustical channel, acoustical communication
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Full-Text Articles in Engineering
Performance Of Chirp-Slope Keying With Joint Time-Frequency Detectors, Inigo X. Incer, Edit J. Kaminsky
Performance Of Chirp-Slope Keying With Joint Time-Frequency Detectors, Inigo X. Incer, Edit J. Kaminsky
Electrical Engineering Faculty Publications
This paper discusses recent studies on Chirp Slope Keying (CSK) as a scheme suitable for underwater communications and presents a new study on the performance of a time-frequency receiver in a Rayleigh fading environment. As expected, CSK proves to be a digital modulation scheme inferior in the AWGN channel as compared to traditional schemes but very promising in more detrimental channels present in underwater communications. In effect, while most schemes’ performances decay abruptly with the addition of new disturbances, a time-frequency CSK receiver’s performance deteriorates slowly with increasing Rayleigh fading. Intuition dictates that CSK will overpower other schemes as channel …