Title :
A hybrid HDSL echo canceler
Author :
Mueller, D. ; Kaelin, A.
Author_Institution :
Inst. for Signal & Inf. Process., Swiss Federal Inst. of Technol., Zurich, Switzerland
fDate :
30 Apr-3 May 1995
Abstract :
In this paper, we present a new high bit-rate digital subscriber line (HDSL) echo canceler scheme. It uses an optimized orthogonal recursive prefilter reducing the computational cost if compared to a conventional FIR filter, a new analog precancellation technique which reduces the dynamic range of the A/D converter, and simple digital correction techniques that reduce the linearity requirements on the data converters. With these features, we expect the hybrid echo canceler to be suitable for a possible one-pair HDSL system
Keywords :
analogue-digital conversion; echo suppression; recursive filters; subscriber loops; A/D converter dynamic range; HDSL echo canceler; analog precancellation technique; computational cost; digital correction techniques; high bit-rate digital subscriber line; linearity requirements; one-pair HDSL system; orthogonal recursive prefilter; Analog-digital conversion; Computational efficiency; DSL; Data communication; Dynamic range; Echo cancellers; Finite impulse response filter; Information processing; Linearity; Signal processing;
Conference_Titel :
Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2570-2
DOI :
10.1109/ISCAS.1995.520333
