04077021 is referenced by 90 patents and cites 2 patents.

A method and structure for converting a sequence of binary digits into a sequence of discrete signal values, e.g., phase values, of a modulated carrier signal for data transmission. By introducing additional redundant signal values and coding information in a state-dependent sequential manner, enlarged minimum Euclidian distance between possible signal value sequences is achieved which results in a reduced error probability when maximum-likelihood decoding is applied in the receiver.

Title
Method and arrangement for coding binary signals and modulating a carrier signal
Application Number
5/799405
Publication Number
4077021
Application Date
May 23, 1977
Publication Date
February 28, 1978
Inventor
Gottfried Ungerboeck
Adliswil
CH
Istvan Peter Csajka
Mahopac
NY, US
Agent
John B Frisone
Assignee
International Business Machines Corporation
NY, US
IPC
H04L 27/20
H04L 27/12
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