Digital demodulating method and circuit for use in a time-divisi

Details Digital demodulating method and circuit for use in a time-divisi Digital demodulating method and circuit for use in a time-divisi

1993-12-30

1996-12-24

Bocure, Tesfaldet

Pulse or digital communications

Receivers

Angle modulation

375331, 375341, 329304, H04L 2722

Patent

active

055880274

ABSTRACT:
A circuit and method for demodulating a .pi./4-DQPSK (differentially quadrature phase shift keying) modulated signal. A receiving .pi./4-DQPSK modulated signal is shifted to a base band and simultaneously separated to an I channel and Q channel. The separated I channel and Q channel signals are converted into digital data. The digitally converted data is stored in a memory and decoded to binary data by phase comparison or Viterbi algorithm.

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"Dictionary of Scientific and Technical Terms" McGraw-Hill.

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