Method for detecting and correcting amplitude and phase...

Details Method for detecting and correcting amplitude and phase... Method for detecting and correcting amplitude and phase...

2005-08-02

2005-08-02

Bocure, Tesfaldet (Department: 2631)

Pulse or digital communications

Receivers

C375S326000, C375S329000, C375S340000

Reexamination Certificate

active

06925132

ABSTRACT:
Disclosed is a method for detecting and correcting amplitude and phase imbalances between in-phase (I) and quadrature-phase (Q) components in a high-speed wireless communication quadrature demodulator, which comprises: a) comparing an input signal with a signal determined by a quadrant to which the input signal belongs, and detecting imbalances between I and Q components with respect to the input signal; and b) using the imbalances detected in a) to correct the input signal. The present invention prevents distorting of the demodulator's performance caused by the imbalances to between I and Q components and increases application to high-speed wireless communication.

REFERENCES:
patent: 5705949 (1998-01-01), Alelyunas et al.
patent: 5949821 (1999-09-01), Emami et al.
patent: 6009317 (1999-12-01), Wynn
patent: 6044112 (2000-03-01), Koslov
patent: 6122325 (2000-09-01), Mogre et al.
patent: 6512800 (2003-01-01), Amir et al.
patent: 001363391 (2003-11-01), None
patent: 06-188938 (1994-07-01), None

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