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Finite-precision analysis of the pipelined strength-reduced adaptive filter

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2 Author(s)
Goel, M. ; Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA ; Shanbhag, N.R.

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

Published in:

Signal Processing, IEEE Transactions on  (Volume:46 ,  Issue: 6 )