Breadcrumb

 
 

Design and performance analysis of VDSL systems with per-tone equalization

Title:

Design and performance analysis of VDSL systems with per-tone equalization

Wang, Peng Fei (2006) Design and performance analysis of VDSL systems with per-tone equalization. Masters thesis, Concordia University.

[img]
Preview
PDF - Accepted Version
3750Kb

Abstract

Digital subscriber line (DSL) is considered as an attractive approach to transmit high-speed data due to its advantage in the provision of affordable broadband services in a wide range of end users without massive capital outlays. Very-high-speed DSL (VDSL) is the latest generation of the xDSL family. It is a promising internet access technique for broadband services, which is capable of supporting high-definition television (HDTV), Voice over IP, and general Internet access over a single twisted pair of wires. In order to overcome the harsh VDSL transmission environment and to realize a reliable high-speed data transmission, equalization technique is required at the receiver to compensate for the channel attenuation and distortion. In this thesis, we focus on the design and performance study of VDSL systems using the per-tone equalization (PTEQ). Some background material pertaining to VDSL systems and equalization techniques is first presented. The per-tone equalization technique is then investigated. Based on a two-port model of the subscriber loop, namely, the so-called ABCD theory, the transfer function of various VDSL test loops are well formulated and simulated. A practical VDSL system with configurations following the standard as well as the PTEQ in the receiver is designed and simulated. Performance study is conducted over several VDSL test loops with various channel conditions, showing a great improvement on the SNR of the received signal and the overall transmission bit-rate of the VDSL system as a result of employing the PTEQ. In order to reduce the computational complexity of the training-based PTEQ initialization, a few adaptive schemes based on the NLMS and SR-RLS algorithms are proposed. Various simulation results regarding the convergence speed of the two adaptive algorithms, the number of equalizer taps and different VDSL test loops are presented. A comparison of the performances of the two adaptive initialization schemes is also presented

Divisions:Concordia University > Faculty of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Thesis (Masters)
Authors:Wang, Peng Fei
Pagination:xviii, 96 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Electrical and Computer Engineering
Date:2006
Thesis Supervisor(s):Aghdam, Amir G.
ID Code:9215
Deposited By:Concordia University Libraries
Deposited On:18 Aug 2011 14:46
Last Modified:30 Nov 2011 16:52
Related URLs:
All items in Spectrum are protected by copyright, with all rights reserved. The use of items is governed by Spectrum's terms of access.

Repository Staff Only: item control page

Document Downloads

More statistics for this item...

Concordia University - Footer