PSD-constrained PAR reduction for DMT/OFDM

Niklas Andgart, B S Krongold, Per Ödling, A Johansson, Per Ola Börjesson

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

7 Citeringar (SciVal)

Sammanfattning

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.
Originalspråkengelska
Artikelnummer836923
TidskriftEurasip Journal on Applied Signal Processing
Volym2004
Utgåva10
DOI
StatusPublished - 2004

Ämnesklassifikation (UKÄ)

  • Elektroteknik och elektronik

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