Title :
Parametric Spectrum Shaping for Downstream Spectrum Management of Digital Subscriber Lines
Author :
Naparstek, Oshri ; Cohen, Kobi ; Leshem, Amir
Author_Institution :
Sch. of Eng., Bar-Ilan Univ., Ramat-Gan, Israel
fDate :
3/1/2012 12:00:00 AM
Abstract :
The performance of Digital Subscriber Line (DSL) systems is tightly dependent on network deployment. The users (lines) in the binder create mutual interference, thus decreasing the rates of all users. The Optimal Spectrum Balancing (OSB) algorithm solves the spectrum management problem to increase user rates. However, the computational complexity of the OSB algorithm is extremely high. In this paper we introduce a novel low-complexity sub-optimal algorithm, dubbed PArametric Spectrum Shaping (PASS). The complexity of the suggested algorithm is independent of the number of tones. Simulation results show that the PASS algorithm matches OSB performance in many typical DSL scenarios.
Keywords :
computational complexity; digital subscriber lines; telecommunication network management; computational complexity; digital subscriber lines; downstream spectrum management; mutual interference; network deployment; optimal spectrum balancing algorithm; parametric spectrum shaping; Approximation algorithms; DSL; Heuristic algorithms; Interference; Radio spectrum management; Resource management; Simulation; Digital subscriber line; discrete multi-tone modulation; dynamic spectrum management; interference channel; near-far scenario;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2012.011312.111939