| 摘要 |
<p>A receiver (100) has an ln-phase path (l-path) (101) that delivers a digital l-path signalϰ1 (t) and a Quadrature path (Q-path) (103) that delivers a digital Q-path signalϰQ (t). The receiver (100) includes a compensation stage (124) arranged to compensate for gain error g and phase error phi between the digital l-path signalϰ1 (t) and the digital Q-path signalϰQ (t). The compensation stage (124) has a compensation coefficient generation stage (200), a compensation coefficient application stage (202), a gain control stage (208), a relative gradient generation stage (214) and a step parameter generation stage (224). Compensation coefficients W1,1, W1,2, W2,1, W2,2 applied to the digital l-path signalϰ1 (t) and the digital Q-path signalϰQ (t) are generated by iteratively updating them using a relative gradient of the compensated digital in-phase signal gamma 1(t) and a compensated digital quadrature signal gamma Q (t), and a step parameter mu n , the magnitude of which is adjusted based on a rate of change of the compensation coefficients W1,1, W1,2, W2,1, W2,2.</p> |
