Pulse or digital communications – Receivers – Angle modulation
Patent
1994-10-13
1997-11-04
Chin, Stephen
Pulse or digital communications
Receivers
Angle modulation
375332, 375340, 329304, H03D 322, H04L 2722
Patent
active
056848358
ABSTRACT:
A locally coherent Quadrature Phase Shift Keying (QPSK) detector that uses a normalized fourth power weighting technique to generate an ambiguous local phase reference of a current symbol. A phase adjusted previous symbol reference is used to resolve the ambiguity using differentially coded data and yield current soft symbol information.
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Baird Jeffrey S.
Bronder Joseph B.
Kroeger Brian W.
Chin Stephen
Phan Hai H.
Westinghouse Electric Corporation
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