Phase ambiguity removing device

Details Phase ambiguity removing device Phase ambiguity removing device

1994-03-21

1996-10-15

Beausoliel, Jr., Robert W.

Excavating

371 54, G06F 1100

Patent

active

055661840

ABSTRACT:
A phase ambiguity removing device for determining the proper phase of the Pch, Qch data demodulated by a receive side demodulator of a Quadrature Phase Shift Keying (QPSK) system includes a second phase information controller for determining the most probable phase of the received signals when detection of synchronizing words fail in the Pch and Qch signals.

REFERENCES:
patent: 3736507 (1973-05-01), Wolejsza, Jr. et al.
patent: 4022973 (1977-05-01), Stackhouse et al.
patent: 4494239 (1985-01-01), Martin
patent: 4849997 (1989-07-01), Suzuki et al.
patent: 5025455 (1991-06-01), Nguyen
Patent Abstracts of Japan, vol. 12, No. 77, Mar. 10, 1988, p. 115, corresponding to JP-A-62 216 557.
Patent Abstracts of Japan, vol. 8, No. 264, Dec. 4, 1984, p. 52, corresponding to JP-A-59 134 951.

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