Precoded gaussian minimum shift keying carrier tracking loop

Details Precoded gaussian minimum shift keying carrier tracking loop Precoded gaussian minimum shift keying carrier tracking loop

1999-10-29

2000-11-14

Ghebretinsae, Temesghen

Pulse or digital communications

Receivers

Angle modulation

H04L 2714

Patent

active

061480401

ABSTRACT:
An improved Gaussian minimum shift keying (GMSK) carrier tracking loop operating at baseband takes advantage of the orthogonality of precoded data GMSK signals and Laurent filtering to provide a carrier phase error signal generated at baseband for carrier phase derotation of the received GMSK signal. The carrier tracking loop also provides demodulated data estimates with performance equal to that of a GMSK serial demodulator. The tracking loop uses data directed feedback to improve noise rejection, but still has fast acquisition by operating at baseband.

REFERENCES:
patent: 4336500 (1982-06-01), Attwood
patent: 5115454 (1992-05-01), Kucar

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