Title :
Finite-precision analysis of the pipelined strength-reduced adaptive filter
Author :
Goel, Manish ; Shanbhag, Naresh R.
Author_Institution :
Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA
fDate :
6/1/1998 12:00:00 AM
Abstract :
In this correspondence, we compare the finite-precision requirements of the traditional cross-coupled (CC) and a low-power strength-reduced (SR) architectures. It is shown that the filter block (F block) coefficients in the SR architecture require 0.3 bits more than the corresponding block in the CC architecture. Similarly, the weight-update (WUD) block in the SR architecture is shown to require 0.5 bits fewer than the corresponding block in the CC architecture. This finite-precision architecture is then used as a near-end crosstalk (NEXT) canceller for 155.52 Mb/s ATM-LAN over unshielded twisted pair (UTP) category-3 cable. Simulation results are presented in support of the analysis
Keywords :
adaptive filters; asynchronous transfer mode; crosstalk; interference suppression; local area networks; pipeline processing; twisted pair cables; 155.52 Mbit/s; ATM-LAN; F block coefficients; NEXT canceller; SR architecture; UTP category-3 cable; WUD block; filter block coefficients; finite-precision analysis; finite-precision architecture; low-power strength-reduced architectures; near-end crosstalk canceller; pipelined strength-reduced adaptive filter; traditional cross-coupled architectures; unshielded twisted pair category-3 cable; weight-update block; Adaptive filters; Adaptive systems; Analytical models; Crosstalk; Engineering profession; Power engineering and energy; Power engineering computing; Signal processing algorithms; Signal to noise ratio; Strontium;
Journal_Title :
Signal Processing, IEEE Transactions on
