Article thumbnail

Optimal Transmit Spectra for Communication on Digital Subscriber Lines

By Rohit Gaikwad and Richard G. BaraniukRohit Gaikwad and Richard G. Baraniuk

Abstract

Conference PaperThis paper presents a general framework for designing optimal transmit spectra for symmetric bit-rate communication services dominated by crosstalk, in particular Digital Subscriber Line (DSL) services such as the proposed HDSL2. Using the channel, noise, and interference transfer functions, we set up and solve an optimization problem to maximize the joint capacity of neighboring lines. Joint signaling techniques and optimal power distribution yield significant gains in bit rates (or performance margins) over current schemes. Furthermore, by design, the spectra are spectrally compatible with existing neighboring services. The framework is quite general --- it does not depend on the exact choice of modulation scheme, for example. It is also extremely simple and of low computational complexity

Topics: DSL, DSP for Communications, DSL
Year: 2006
OAI identifier: oai:scholarship.rice.edu:1911/20286
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://hdl.handle.net/1911/202... (external link)
  • http://dsp.rice.edu/) (external link)

  • To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.

    Suggested articles