Paper Info
Title
Lattice implementation of adaptive channel shortening in multicarrier transmission over IIR channels.
Abstract
Time-domain equalization is crucial in reducing channel dispersion and canceling interference in multicarrier systems. The equalizer is a finite impulse response (FIR) filter with the purpose that the delay spread of the combined channel-plus-equalizer IR is not longer than the cyclic prefix length. In this paper, a specific framework of long FIR channel-shortening problem is studied. In fact, approximated by a stable pole-zero model, we show that the channel transfer function poles introduce interference. Hence, to cancel bad poles, we propose the use of lattice structure to implement the channel shortener which places their zeros very close to critical channel poles and cancels them out. For low complexity implementation, we adopt adaptive algorithms to design the lattice channel shorteners. This paper analyzes the lattice structure performances of two blind adaptive channel shorteners: sum-squared autocorrelation minimization and multicarrier equalization by restoration of redundancy algorithms. The proposed implementation performances are given in terms of bit rate, and the simulation results are studied in the context of asymmetric digital subscriber line system.
Year
DOI
Venue
2013
10.1186/1687-6180-2013-174
EURASIP J. Adv. Sig. Proc.
Keywords
Field
DocType
Impulse Response, Finite Impulse Response, Cyclic Prefix, Recursive Little Square, Mean Square Deviation
Impulse response,Equalization (audio),Computer science,Artificial intelligence,Finite impulse response,Topology,Computer vision,Cyclic prefix,Infinite impulse response,Delay spread,Communication channel,Asymmetric digital subscriber line,Electrical engineering
Journal
Volume
Issue
ISSN
2013
1
1687-6180
Citations 
PageRank 
References 
0
0.34
13
Authors
4
Name
Order
Citations
PageRank
Emna Ben Salem101.01
Sofiane Cherif2237.58
Hichem Besbes38022.41
Roberto López-Valcarce430041.00