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Method and apparatus to remove effects of I-Q imbalances of quadrature modulators and demodulators in a multi-carrier system
Method and apparatus to remove effects of I-Q imbalances of quadrature modulators and demodulators in a multi-carrier system
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机译:消除多载波系统中正交调制器和解调器的I-Q不平衡影响的方法和装置
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摘要
The present invention is a method and apparatus to remove the adverse effects due to the imbalance between in-phase (I) and quadrature (Q) channels for I-Q demodulators and modulators in multi-carrier systems. A first balancer generates a first balancing signal from a first signal of a first index corresponding to a first frequency. A first combiner combines the first balancing signal and a second signal of a second index corresponding to a second frequency. The second frequency is symmetrical to the first frequency with respect to a center frequency in a multi-carrier composite signal. The first combiner generates a first balanced signal corresponding to the second frequency.
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