Design of Pipelined Adaptive DFE Architecture For High Speed Channel Equalization

An adaptive equalizer is a vital and essential component for high-speed reliable data transmission through wired as well as wireless communication channels to minimize Inter Symbol Interference (ISI). The non-linear Adaptive Decision Feedback Equalizer (ADFE) finds enormous use in applications where the channel distortion is severe for a linear equalizer to handle. High hardware cost of the system makes an urge to redesign it in order to minimize overall circuit complexity and cost. In this paper, realization of COordinate Rotation Digital Computer (CORDIC) based pipelined ADFE architecture using reformulated least-mean-square (LMS) algorithm has been presented. The realization results area efficient, better speed and throughput with good convergence. The efficacy of the proposed equalizer is corroborated with MATLAB simulations for mitigation of severe channel distortion arise due to ISI in high speed communication systems.