Pulse or digital communications – Transmitters
Patent
1993-06-14
1995-07-25
Chin, Stephen
Pulse or digital communications
Transmitters
3701104, 455 93, H04L 2704
Patent
active
054369304
ABSTRACT:
An analog signal is added to a data signal that specifies a symbol in a symbol constellation to produce a combined signal that is transmitted to a receiver. The symbol constellation is picked from a plurality of symbol constellations having differing symbol densities based on the amplitude of the analog signal.
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Bremer Gordon
Ko Kenneth D.
Smithwick Luke J.
AT&T Corp.
Chin Stephen
Malvone Christopher N.
Phan Hai H.
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