| 摘要 |
A method for I/Q mismatch calibration in a receiver. The receiver has an I/Q correction module using parameters Ap and Bp. The method comprises the steps of generating an analog test signal x(t), applying I/Q demodulation to reduce the central frequency of the signal x(t) by fc Hz and outputting a demodulated signal xdem(t), converting the analog signal xdem(t) to a digital signal xdem[n], sending the signal xdem[n] into the I/Q correction module using parameters Ap and Bp and outputting a corrected signal w[n], obtaining two measures U1 and U2 of the corrected signal w[n], and updating the parameters Ap and Bp of the I/Q correction module respectively by a first and second function of the two measures U1 and U2, and the current values of the parameters Ap and Bp.
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