PAPR Reduction in MC/DS CDMA System by DFT Spreading Codes

Author

Li, Yingshan ; Kyung, Ju-Hyun ; Son, Jong-Won ; Ryu, Heung-Gyoon

Author_Institution

Dept. of Electron. Eng., Chungbuk Nat. Univ.

Volume

2

fYear

2005

Firstpage

326

Lastpage

329

Abstract

Multi-carrier direct sequence code division multiple access (MC/DS CDMA) technique is one of the optimum technique for the reverse link mobile transmission. However, because of multi-carrier property, large PAPR (peak to average ratio) may be generated in MC/DS CDMA system. In this paper, DFT spreading code is applied to reduce high PAPR efficiently. As results, about 6 dB PAPR can be achieved at CCDF of 10 ^-3 in the MC/DS CDMA system with 12 data carriers. SER performance can be improved significantly compared with conventional MC/DS CDMA system with nonlinear HPA

Keywords

code division multiple access; discrete Fourier transforms; error statistics; mobile radio; spread spectrum communication; DFT spreading codes; MC/DS CDMA system; PAPR reduction; discrete Fourier transform; error statistics; multicarrier direct sequence code division multiple access; peak to average ratio; reverse link mobile transmission; spread spectrum communication; Bandwidth; Bit error rate; Degradation; Discrete Fourier transforms; Dynamic range; High power amplifiers; Multiaccess communication; Nonlinear distortion; OFDM modulation; Peak to average power ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Technology and Applications, 2005. ICITA 2005. Third International Conference on

Conference_Location

Sydney, NSW

Print_ISBN

0-7695-2316-1

Type

conf

DOI

10.1109/ICITA.2005.205

Filename

1488978