04483012 is referenced by 46 patents and cites 4 patents.

A technique for converting a sequence of binary digits into a sequence of signalling alphabets of a modulated carrier signal for data transmission. By introducing additional redundant signalling alphabets and differentially coding incoming data in a state-dependent sequential manner, enlarged minimum Euclidean distance between possible sequences of signaling alphabets is achieved while phase ambiguity of the expanded set of signalling alphabets is removed. This results in a reduced error probability when maximum likelihood decoding is applied in the receiver.

Title
Differentially convolutional channel coding with expanded set of signalling alphabets
Application Number
6/486081
Publication Number
4483012
Application Date
April 18, 1983
Publication Date
November 13, 1984
Inventor
Lee Fang Wei
Matawan
NJ, US
Agent
B H Freedman
Assignee
AT&T Information Systems
NJ, US
IPC
H04L 1/10
H04L 5/12
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