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PSD-constrained PAR reduction for DMT/OFDM

Andgart, Niklas LU ; Krongold, B S; Ödling, Per LU ; Johansson, A and Börjesson, Per Ola LU (2004) In Eurasip Journal on Applied Signal Processing 2004(10).
Abstract
Common to all DMT/OFDM systems is a large peak-to-average ratio (PAR), which can lead to low power efficiency and nonlinear distortion. Tone reservation uses unused or reserved tones to design a peak-canceling signal to lower the PAR of a transmit block. In DMT ADSL systems, the power allocated to these tones may be limited due to crosstalk issues with many users in one twisted pair bundle. This PSD limitation not only limits PAR reduction ability, but also makes the optimization problem more challenging to solve. Extending the recently proposed active set tone reservation method, we develop an efficient algorithm with performance close to the optimal solution.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
DMT, peak-to-average ratio, tone reservation, OFDM
in
Eurasip Journal on Applied Signal Processing
volume
2004
issue
10
publisher
Hindawi Publishing Corporation
external identifiers
  • wos:000225675600007
  • scopus:10244245458
ISSN
1110-8657
DOI
10.1155/S1110865704403187
language
English
LU publication?
yes
id
0622026d-2046-4b8d-8479-fa534eb875ff (old id 259300)
date added to LUP
2007-10-16 13:12:56
date last changed
2017-04-23 04:17:32
@article{0622026d-2046-4b8d-8479-fa534eb875ff,
  abstract     = {Common to all DMT/OFDM systems is a large peak-to-average ratio (PAR), which can lead to low power efficiency and nonlinear distortion. Tone reservation uses unused or reserved tones to design a peak-canceling signal to lower the PAR of a transmit block. In DMT ADSL systems, the power allocated to these tones may be limited due to crosstalk issues with many users in one twisted pair bundle. This PSD limitation not only limits PAR reduction ability, but also makes the optimization problem more challenging to solve. Extending the recently proposed active set tone reservation method, we develop an efficient algorithm with performance close to the optimal solution.},
  articleno    = {836923},
  author       = {Andgart, Niklas and Krongold, B S and Ödling, Per and Johansson, A and Börjesson, Per Ola},
  issn         = {1110-8657},
  keyword      = {DMT,peak-to-average ratio,tone reservation,OFDM},
  language     = {eng},
  number       = {10},
  publisher    = {Hindawi Publishing Corporation},
  series       = {Eurasip Journal on Applied Signal Processing},
  title        = {PSD-constrained PAR reduction for DMT/OFDM},
  url          = {http://dx.doi.org/10.1155/S1110865704403187},
  volume       = {2004},
  year         = {2004},
}