| 摘要 |
<p>A system (55-1) for correcting gain imbalance and phase imbalance between first (Iomicronupsilontau) and second (QOUT) signals which are 90° out of phase, including circuitry (32) for estimating the phase mismatch (φ) and gain mismatch (Delta) between the first signal and the second signal signals in a plurality of frequency bands. An inverse fast Fourier transform is performed on each of a number of arrays of the phase mismatch estimates and the gain mismatch estimates to generate correction filter coefficients (h[N]) for a N tap correction filter (61). The N tap correction filter filters an uncorrected value of the second signal to generate a corrected value of the second signal.</p> |
