Patent ID: 8284878
Filing Date: 2012-10-09
Classification: H04B,H04L

Abstract:
1. A receiver for echo and crosstalk cancellation comprising: a level decision module for receiving an estimation signal and determining a plurality of levels and a plurality of level thresholds corresponding to the plurality of levels according to the estimation signal to generate a first digital signal; a digital to analog converter for receiving the first digital signal and converting the first digital signal into a first analog signal according to the plurality of levels and the plurality of level thresholds; an analog to digital converter for receiving a first difference signal corresponding to signal difference between a reception signal and the first analog signal and converting the first difference signal into a second digital signal; a subtracting circuit, coupled to the digital to analog converter and the analog to digital converter, for generating the first difference signal corresponding to the signal difference between the reception signal and the first analog signal by subtracting the first analog signal, which is generated by the digital to analog converter, from the reception signal; and a response module for receiving the first digital signal and generating a response signal according to the first digital signal; wherein the response signal compensates the second digital signal to generate a back-end input signal.