Analysis and Application of a Time Domain Adaptive Equalizer

The transmission characteristic of frequency selective fading channel is summarized.The necessity of equalization is discussed.Through comparing the capability of intersymbol interference resistance,the speed of convergence and the complexity of different kinds of equalizer structures and adaptive algorithms,the equalizer scheme adopting DFE as the equalizer structure and LMS algorithm as the adaptive rule is chosen.It is proved by simulation and test results that the equalizer not only has strong capability of intersymbol interference resistance,but also has the gain of concealed diversities.The equalizer has good performance in frequency selective fading channel.