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A Unified Approach to Dynamic Length Algorithms for Adaptive Linear Equalizers

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4 Author(s)
Xusheng Wei ; Wireless Group, Philips Res., Redhill ; David G. M. Cruickshank ; Bernard Mulgrew ; Felip Riera-Palou

The number of taps is an important factor which affects nearly all the performance and complexity measures of adaptive equalizers. Recently, dynamic length algorithms for the adaptive finite impulse response (FIR) filters have attracted considerable attention and several methods have been proposed. Nevertheless, the relationship among these techniques is still unclear which makes the performance comparison remaining difficult. In this paper, a unified explanation of these techniques is presented which summarizes all proposed algorithms and provides a platform for their performance comparison. Moreover, a new type of dynamic length algorithms, the varying threshold dynamic length algorithm (VT-DLA) is proposed. Simulation results show that the performance of the new algorithm outperforms that of existing algorithms

Published in:

IEEE Transactions on Signal Processing  (Volume:55 ,  Issue: 3 )