PAR Reduction in the Uplink for OFDMA Systems

Author

Krongold, Brian S.

Author_Institution

Dept. of Electr. & Electron. Eng., Melbourne Univ., Carlton, Vic.

fYear

2006

fDate

2-5 July 2006

Firstpage

1

Lastpage

5

Abstract

Orthogonal frequency-division multiple access (OFDMA) technology is being considered for uplink (UL) transmission in future mobile standards. While such systems can enjoy the advantages of OFDM, it also shares its disadvantages, and in particular, a large peak-to-average power ratio (PAR). PAR reduction techniques can be employed, but with a fraction of the bandwidth used by each user, the UL-OFDMA scenario is different than for traditional OFDM systems. Tone reservation has been proposed as one technique in recent 3GPP standards meetings, but in this paper, we offer more efficient algorithms that are well-suited for the UL-OFDMA case and easily incorporate any necessary power-spectral density (PSD) constraints

Keywords

3G mobile communication; OFDM modulation; frequency division multiple access; mobile radio; radio links; 3GPP standards; OFDMA systems; PAR reduction; orthogonal frequency-division multiple access technology; peak-to-average power ratio; power-spectral density constraints; tone reservation; uplink transmission; Bandwidth; Batteries; Downlink; Hardware; Intelligent networks; Multiple access interference; OFDM; Peak to average power ratio; Power amplifiers; Power engineering and energy;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on

Conference_Location

Cannes

Print_ISBN

0-7803-9710-X

Electronic_ISBN

0-7803-9711-8

Type

conf

DOI

10.1109/SPAWC.2006.346393

Filename

4153901