Affordable Access

Adaptive ‘imperfect’ decision feedback equalizer for a frequency selective communication channel

DSP for Communication Systems
Publication Date
  • T Technology (General)
  • Tk Electrical Engineering. Electronics Nuclear Engineering
  • Communication
  • Design


In this paper, we show that, for an uncoded receiver system, the proposed least mean square (LMS) decision aided equalizer (DAE), with, the backward step-size constant greater than forward step-size constant, compared to classical equal-step size design, has a lower mean square error by upto 5 dB, for a frequency selective wireless communication channel. Classical LMS DAE with equal step-size constants, can be considered as perfect decision feedback system, compared to, the proposed unequal step-size, as a imperfect decision feedback system. We provide, Wiener DAE, considering imperfect decision feedback information, during training mode and provide analysis for LMS DAE with unequal step size constants.

There are no comments yet on this publication. Be the first to share your thoughts.