Pulse or digital communications – Repeaters – Testing
Patent
1987-12-04
1989-07-11
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
375102, 375114, H03D 300, H04L 2714
Patent
active
048478695
ABSTRACT:
The method and apparatus for rapid phase acquisition and random radio channel phase error compensation for a TDMA QPSK receiver is disclosed. Received quadrature signals having a known synchronizing sequence transmitted on one of the vectors is correlated to a local replica of the sequence. The output correlation detection signals are held for the duration of the TDMA timeslot and multiplied by the received quadrature signals to produce two pairs of products. The mutually exclusive product pairs are summed to recover data having the random phase error compensated.
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Borth David E.
Labedz Gerald P.
Chin Stephen
Griffin Robert L.
Hackbart Rolland R.
Jenski Raymond A.
Motorla, Inc.
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