Method and apparatus for correcting phase and gain imbalance bet

Details Method and apparatus for correcting phase and gain imbalance bet Method and apparatus for correcting phase and gain imbalance bet

1996-08-05

1999-09-07

Pham, Chi H.

Pulse or digital communications

Equalizers

Automatic

3647242, 333 28T, H03H 730

Patent

active

059498218

ABSTRACT:
A communication device (100) includes an equalizer (126) for correcting imbalance between in-phase and quadrature components of a received signal. The equalizer (126) determines peak amplitude for the in-phase and quadrature components, and the phase imbalance between both components (440). At least one of the in-phase and quadrature components is adjusted based on a function of the phase imbalance, and of the ratio of peak amplitudes of the in-phase and quadrature components (450, 460).

REFERENCES:
patent: 4122448 (1978-10-01), Martin
patent: 4475088 (1984-10-01), Beard
patent: 5263196 (1993-11-01), Jasper
patent: 5345472 (1994-09-01), Lee
patent: 5396656 (1995-03-01), Jasper et al.
patent: 5414699 (1995-05-01), Lee
patent: 5636244 (1997-06-01), Goodson et al.

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