Multi-tap IQ imbalance estimation and correction circuit and method
作者： Nagarajan Viswanathan
DOI:
关键词: Algorithm 、 Filter design 、 Signal 、 Filter (signal processing) 、 Inverse 、 Fast Fourier transform 、 Mathematics 、 Value (computer science) 、 Electronic engineering 、 Radio spectrum 、 Phase (waves)
摘要: A system ( 55 - 1 ) for correcting gain imbalance and phase between first (I OUT second (Q signals which are 90° out of phase, including circuitry 32 estimating the mismatch (φ) (Δ) signal in a plurality frequency bands. An inverse fast Fourier transform is performed on each number arrays estimates to generate correction filter coefficients (h[N]) N tap 61 ). The filters an uncorrected value corrected signal.
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