Signal structure for data communication
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United States of America Patent
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-
Apr 21, 1987
Grant Date -
N/A
app pub date -
Nov 22, 1983
filing date -
Nov 22, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A signal structure for high speed data communication selects each signal point in the structure to attain a low probability of error in the presence of both additive noise and multiplicative noise. Transmission apparatus for practice of the invention employs an encoder which responds to digital data to produce a QAM signal having parameters selected according to the new signal structure, and receiving apparatus employs a decoder which converts a received QAM signal to digital values according to the same structure.
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