Telecommunications – Transmitter and receiver at separate stations – Single or vestigial sideband system
Patent
1980-07-02
1985-06-25
Chin, Tommy P.
Telecommunications
Transmitter and receiver at separate stations
Single or vestigial sideband system
455109, 455203, H04B 168
Patent
active
045258627
ABSTRACT:
A single carrier is amplitude-modulated by a signal which is a transform (as the sine function) of the audio signal, and one set of sidebands is removed. In a receiver, the signal can be recovered by first deriving the Hilbert transform of the sine transform, and multiplying it by the signum of the derivative of the original audio signal to obtain the cosine transform. The sine and cosine transforms are then decoded to obtain the original audio signal.
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Spectrum Conservation and Characteristics of Single-Sideband Phase Modulation, by S. A. Cohen, IEEE Transactions on Electromagnetic Compatibility, vol. EMC-12, No. 3, 8/1970, pp. 69-77.
The Analytic Signal Representation of Modulated Waveforms, by Edward Bedrosian, Proceedings of the IRE, pp. 2071-2076.
Chin Tommy P.
Gillman James W.
Motorola Inc.
Parker Margaret Marsh
Roney Edward M.
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