A New Phase Sequence for SLM in MC-CDMA System

Author

Wang, Jizeng ; Luo, Jingyu ; Zhang, Yanlong

Author_Institution

LanZhou Univ. of Technol., Lanzhou

fYear

2007

fDate

21-25 Sept. 2007

Firstpage

938

Lastpage

941

Abstract

High Peak to Average Power Ratio (PAPR) is a central obstacle to MC-CDMA system. Selected Mapping (SLM) is an effective method to reduce PAPR of MC-CDMA signal. In SLM the most direct infection of PAPR is what sequence is used as the phase sequence. A new Pseudo Random Interferometry code is proposed as the phase sequence for SLM to reduce PAPR of MC- CDMA in this paper, and the simulations of PAPR performance and BER performance are given. The investigation results show that the proposed sequence is more effective for PAPR reduction in MC-CDMA system compared with Walsh-Hadamard sequence and Golay sequence. By the proposed sequence, MC- CDMA system has preferable performance as the simulation of BER performance curve of MC-CDMA showed.

Keywords

Golay codes; Hadamard codes; Walsh functions; code division multiple access; error statistics; BER; Golay sequence; MC CDMA system; Walsh Hadamard sequence; average power ratio; pseudo random interferometry code; selected mapping; Bit error rate; Interferometry; Multiaccess communication; Multicarrier code division multiple access; Nonlinear distortion; OFDM; Partial transmit sequences; Peak to average power ratio; Signal mapping; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1311-9

Type

conf

DOI

10.1109/WICOM.2007.241

Filename

4340016