| 摘要 |
<p>An apparatus for compensating signal distortion via use of a feedback path, with reduced analog to digital conversion capacity requirements. In one embodiment, the apparatus is part of a transmission system which has an analog amplifier that distorts an information signal. Prior to the amplification, the information signal is provided in a digital format, processed digitally, and converted to analog for input to the amplifier. A sample signal is coupled off of output of the amplifier and supplied along the feedback path. An analog-to-digital converter is located along the feedback path. A pre-distortion corrector is at the end of the feedback path. The pre-distortion corrector operates upon the source information using feedback data indicative of the amplifier distortion. The information signal is pre-distorted to compensate for the distortion of the amplifier. A summation device is located along the feedback path, upstream of the analog-to-digital converter</p> |
