Patent ID: 7756220
Filing Date: 2010-07-13
Classification: H04L

Abstract:
1. A baseline wandering compensation circuit, comprising: a digital-to-analog converter (DAC), for converting a first compensation signal from a digital signal to an analog signal, and outputting the converted first compensation signal; a baseline compensator, for receiving an input signal, using the converted first compensation signal to adjust a direct current (DC) bias of the input signal, and outputting the adjusted input signal; an analog-to-digital converter (ADC), for converting the adjusted input signal from an analog signal to a digital signal, and then outputting the digitalized input signal; an equalizer, for eliminating the channel effect of the digitalized input signal, and outputting the input signal after the channel effect elimination; a slicer, for determining the state value corresponding to the input signal after the channel effect elimination, outputting a slicer error of the state determination, and using a second compensation signal to adjust the determining levels of the state determination; a baseline corrector, for outputting the first compensation signal and the second compensation signal according to the slicer error, the baseline corrector comprising: a quantization device, for outputting a first compensation and a second compensation according to the slicer error, wherein the first compensation signal is the first compensation or is generated according to the first compensation, and the second compensation signal is the second compensation or is generated according to the second compensation.