Patent ID: 7289556

Claim:
An apparatus for compensating signal attenuation based on an equalizer, the equalizer having a feed forward equalizer, the feed forward equalizer having a plurality of weights, the largest weight of the weights being a primary weight, the apparatus comprises: an auto gain controller, for receiving an incoming analog signal and amplifying the received analog signal; an analog-to-digital converter, connected to the auto gain controller, for con-verting the output of the auto gain controller into a digital signal; and an auto-gain-control mapping circuit connected to the auto gain controller, whose output is used to control the gain of the auto gain controller, wherein the equalizer being connected to the output of the analog-to-digital converter, for eliminating signal attenuation in the digital output of the analog-to-digital converter, the primary weight of the feed forward equalizer being transmitted to the auto-gain-control mapping circuit the output of the auto-gain-control mapping circuit controlling the gain of the auto gain controller based only on the primary weight.