Patent ID: 7894515
Filing Date: 2011-02-22
Classification: H04L

Abstract:
1. An adaptive equalizer having an adaptive filter, for at least partly compensating for frequency dependent signal modifications introduced by a transmission channel, said adaptive filter comprising a plurality of adaptive amplification compensation stages, each compensation stage being provided for receiving at least one tuning parameter, from a respective tuning circuit, wherein each the at least one tuning parameter received from the tuning circuit is such that it has one of a first binary value, a second binary value, or an intermediate value, a tuning parameter with a binary value generating a first signal filtering behavior and a tuning parameter with an intermediate value generating a second signal filtering behavior, the second signal filtering behavior being non-linear signal filtering behavior in that the quality of the filtering behavior depends on an amplitude of a signal input to each of the respective compensation stages; a control circuit for the tuning parameter comprising at least one port for receiving a first tuning parameter value and at least one port for outputting the tuning parameter value; a memory element for storing a value for the tuning parameter; and wherein said adaptive amplification compensation stage receiving said tuning parameter having an intermediate value, does not completely compensate for a signal loss of a portion of the transmission channel.