| 摘要 |
<p>Radio distortion in a radio signal is compensated for in a digital modem in a wireless communication system. An actual frequency response of components in the wireless communication system contributing to distortion is determined. The inverse of the actual frequency response is multiplied with an ideal frequency response of the wireless communication system to produce a compensation frequency response. The compensation frequency response is applied to the radio signal to compensate for radio distortion. Alternately, an actual impulse response of components in the wireless communication system contributing to distortion is determined. The actual impulse response is convolved with an input reference signal to produce an actual output signal. The ideal impulse response is convolved with the same input reference signal to produce a desired output signal. The actual output signal is subtracted from the desired output signal to produce an error signal, and an adaptive algorithm is applied to the error signal to produce an adaptive compensation impulse response. When the adaptive compensation impulse response converges to an optimal solution, it is applied to the radio signal to compensate for radio distortion.</p> |
