Pulse or digital communications – Receivers – Angle modulation
Patent
1993-04-29
1995-12-12
Coles, Sr., Edward L.
Pulse or digital communications
Receivers
Angle modulation
375279, 375340, 341 70, 329304, H03D 322, H04L 2710, H03M 712
Patent
active
054757053
ABSTRACT:
Binary signals that are transmitted by Manchester coding and frequency modulation are demodulated based on the behavior of the phase or complex vector value of the received signal. The polarities of the information bits may be determined by measuring the phase excursions in the middles of the Manchester symbols. A phase reference is established from a plurality of candidate phase references as a basis for comparison of the mid-symbol phase. The phase can be measured at the start-points and end-points of the symbols and averaged, or measured a plurality of times during each symbol period to generate a reference phase.
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Coles Sr. Edward L.
Ericsson - GE Mobile Communications Inc.
Williams Kimberly A.
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