H - Electricity – 04 – L
Patent
H - Electricity
04
L
325/87
H04L 7/02 (2006.01) G06G 7/12 (2006.01) H04L 27/233 (2006.01)
Patent
CA 1057358
ABSTRACT OF THE DISCLOSURE A method and circuit for determining a unique word contained in received signals in a transmission system which operates with a multiple phase type of modulation at the trans- mitter and coherent demodulation at the receiver, the unique word being transmitted only as signals in two phases which are 180° apart and the received signals being divided into orthog- onal voltage components during demodulation, a single value whose algebraic sign is indicative of the unique word being derived by dividing the orthogonal components to form a quotient signal representative of the ratio therebetween, integrating the quotient signal over a plurality of clock pulse periods, multi- plying the integrated quotient signal with one of the orthog- onal components, and adding the resultant product signal to the other orthogonal component to form the single value. - 1 -
253565
Ekstrom Bo
Steinert Wolfgang
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