Parametric spectrum shaping for downstream spectrum management of Digital Subscriber Lines

Oshri Naparstek*, Kobi Cohen, Amir Leshem

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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.

Original languageAmerican English
Article number6134702
Pages (from-to)417-419
Number of pages3
JournalIEEE Communications Letters
Issue number3
StatePublished - Mar 2012
Externally publishedYes


  • Digital Subscriber Line
  • Discrete multi-tone modulation
  • Dynamic spectrum management
  • Interference channel
  • Near-far scenario


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