Du är här

Moving the PAR Reduction Criterion into the Line Driver

Författare:
Publiceringsår: 2004
Språk: Engelska
Publikation/Tidskrift/Serie: Proc. European Signal Processing Conference 2004
Dokumenttyp: Konferensbidrag

Sammanfattning

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.

Disputation

Nyckelord

  • Technology and Engineering

Övrigt

European Signal Processing Conference EUSIPCO
2004-09-06/2004-09-10
Vienna, Austria
Published
Yes

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen

LERU logo U21 logo