Compensation of the IQ phase asymmetry in quadrature...

Details Compensation of the IQ phase asymmetry in quadrature... Compensation of the IQ phase asymmetry in quadrature...

2007-01-16

2007-01-16

Kinkead, Arnold (Department: 2817)

Modulators

Phase shift keying modulator or quadrature amplitude modulator

C375S261000, C375S324000, C329S306000

Reexamination Certificate

active

10893623

ABSTRACT:
A simplified compensation matrix is set up for the compensation of phase errors between the I and the Q component in data transmission systems with quadrature modulation or demodulation. This simplified compensation matrix permits a previously determined phase error Δφ to be used as the basis for replacing two of the multipliers required in the conventional circuit configurations by relatively simple shift registers (4, 5) for a multiplication by 1 or by a constant.

REFERENCES:
patent: 5705949 (1998-01-01), Alelyunas et al.
patent: 6330290 (2001-12-01), Glas
patent: 6895045 (2005-05-01), Ozluturk et al.
patent: 1 120 944 (2001-01-01), None

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