| 摘要 |
<p>A method of canceling gain and phase imbalance including estimating a cancellation parameter W(n) based on the signal S(n) divided by its complex conjugate S*(n), calculating a correction value S*(n)K(n) for the signal using the cancellation parameter, and correcting the signal by subtracting 311 the correction value from the signal. Estimating the cancellation parameter may include performing a stochastic gradient algorithm 307 or determining a least squares estimate 203. A cancellation system 300 including a conjugate conversion unit 301, an estimator 307, a combiner 303, a converter 305, and a subtractor 311. The estimator estimates a cancellation parameter and the combiner combines the cancellation parameter and the complex conjugate signal to provide a cancellation signal. The converter converts the cancellation signal to a correction signal, and the subtractor subtracts the correction signal from the imbalanced signal to provide a corrected signal.</p> |
