Peak reduction of multi-carrier systems by controlled spectral outgrowth

Marc Deumal, Joan L. Pijoan, Ismael Gutierrez, Ali Behravan

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Resumen

One of the major drawbacks with multi-carrier (MC) modulations is the large Peak-to-Average Power Ratio (PAPR) of the transmitted signal which significantly reduces the power amplifier efficiency and the system performance. Several PAPR reducing methods which do not decrease the system performance have been proposed. In this paper, we present a new low complexity PAPR reduction technique based on the controlled spectral outgrowth (CSO) of the nearby subcarriers which neither requires the transmission of additional information nor reduces the system performance and is independent of the mapping scheme. The proposed method can be easily combined with most of the methods in the literature to provide a further peak reduction in any MC or MC Spread Spectrum (MC-SS) system. An analog PAPR reduction about 2.5 dB at 10-4 symbol clip probability and a power increase about 0.12 dB are obtained for a 256-subcarrier OFDM transmission.

Idioma originalInglés
Título de la publicación alojada2006 IEEE International Conference on Acoustics, Speech, and Signal Processing - Proceedings
PáginasIV317-IV320
EstadoPublicada - 2006
Evento2006 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006 - Toulouse, Francia
Duración: 14 may 200619 may 2006

Serie de la publicación

NombreICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volumen4
ISSN (versión impresa)1520-6149

Conferencia

Conferencia2006 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006
País/TerritorioFrancia
CiudadToulouse
Período14/05/0619/05/06

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