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PSD-constrained PAR reduction for DMT/OFDM

In English

Författare

Summary, in English

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.

Publiceringsår

2004

Språk

Engelska

Publikation/Tidskrift/Serie

Eurasip Journal on Applied Signal Processing

Volym

2004

Issue

10

Dokumenttyp

Artikel i tidskrift

Förlag

Hindawi Limited

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • DMT
  • peak-to-average ratio
  • tone reservation
  • OFDM

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1110-8657