04311964 is referenced by 42 patents and cites 10 patents.

An apparatus and method for coherent phase demodulation of a binary phase shift keyed carrier includes sequentially processing plus and minus polarity samples of plural carrier segments occurring within each carrier data symbol. The samples for each segment provide a binary coded signal for producing corresponding first and second relative phase angle vector signals. The second vector signals are summed over several data symbols to generate reference phase angle signal vector signals. Correlation signals are produced from phase comparison of each of the first vectors with the reference vector signals. The correlation signals are summed in a synchronized relationship for the carrier segments included in each data symbol. The sums of the correlation signals represent either positive or negative correlations with the one and zero data bits of the carrier data symbols.

Title
Coherent phase shift keyed demodulator for power line communication systems
Application Number
6/77824
Publication Number
4311964
Application Date
September 21, 1979
Publication Date
January 19, 1982
Inventor
John R Boykin
Arnold
MD, US
Agent
E L Pencoske
D R Lackey
Assignee
Westinghouse Electric
PA, US
IPC
H04L 27/22
H03D 3/00
View Original Source