H - Electricity – 04 – L
Patent
H - Electricity
04
L
354/127, 354/141
H04L 27/22 (2006.01)
Patent
CA 1087317
ABSTRACT OF THE DISCLOSURE A method for detecting a predetermined code word contained in received signals in a transmission system which operates with a four-phase type of modulation at the transmitter and coherent demodulation at the receiver, the code word being transmitted only as signals in two phases which are 180° apart and the received signals being divided into orthogonal voltage components during demodulation. The method comprises: forming a representation of the algebraic difference of the orthogonal voltage com- ponents of a received signal increment; determining which of the sum and difference has the larger absolute magnitude value; and evaluating a rec- eived signal increment in accordance with the algebraic sign of that one of the sum and difference which has such larger absolute value.
323774
Ekstr'm Bo
Milcz Wilhelm
Steinert Wolfgang
Fetherstonhaugh & Co.
Licentia Patent-Verwaltungs-Gmbh
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