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Moving the PAR Reduction Criterion into the Line Driver

Author

  • K Werner
  • N Larsson
  • Niklas Andgart
  • Thomas Magesacher
  • Tore André
  • Torbjörn Randhal
  • Per Ödling

Summary, in English

Traditionally, Peak to Average Ratio (PAR) reduction in digital subscriber line (DSL) transmitters focuses on a digitaldomain signal, either at the output of the baseband processing block or at the input of the digital-to-analogue converter (DAC). However, analysis of a DSL transceiver shows that the power dissipation is highly dependent on the PAR at a certain node inside the line driver. Thus, in order to be fully effective, the algorithm design should include the power amplifier

dynamics. A typical, actively terminated, line driver is

analysed and a model is constructed for PAR reduction purposes. The PAR reduction algorithm is then extended to take advantage of the model. Simulations show that algorithms which are designed to reduce PAR at the new, physically motivated, node obtain about 0.5 dB lower PAR evaluated at this node compared to methods that focus on the PAR of the DAC input.

Publishing year

2004

Language

English

Pages

1939-1942

Publication/Series

12th European Signal Processing Conference, EUSIPCO 2004

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Conference name

12th European Signal Processing Conference EUSIPCO, 2004

Conference date

2004-09-06 - 2004-09-10

Conference place

Vienna, Austria

Status

Published

ISBN/ISSN/Other

  • ISBN: 978-320000165-7