Open Access

Designing Tone Reservation PAR Reduction

  • Niklas Andgart1Email author,
  • Per Ödling1,
  • Albin Johansson2 and
  • Per Ola Börjesson1
EURASIP Journal on Advances in Signal Processing20062006:038237

https://doi.org/10.1155/ASP/2006/38237

Received: 20 December 2004

Accepted: 8 July 2005

Published: 9 March 2006

Abstract

Tone reservation peak-to-average (PAR) ratio reduction is an established area when it comes to bringing down signal peaks in multicarrier (DMT or OFDM) systems. When designing such a system, some questions often arise about PAR reduction. Is it worth the effort? How much can it give? How much does it give depending on the parameter choices? With this paper, we attempt to answer these questions without resolving to extensive simulations for every system and every parameter choice. From a specification of the allowed spectrum, for instance prescribed by a standard, including a PSD-mask and a number of tones, we analytically predict achievable PAR levels, and thus implicitly suggest parameter choices. We use the ADSL2 and ADSL2+ systems as design examples.

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Authors’ Affiliations

(1)
Signal Processing Group, Department of Information Technology, Lund University
(2)
Ericsson AB

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Copyright

© Niklas Andgart et al. 2006

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.