Title :
A Novel User Grouping Scheme for PAPR Reduction in MC-CDMA System
Author :
Dan, Lilin ; Wen, Qingsong ; Xiao, Yue ; Li, Shaoqian
Author_Institution :
Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
The high peak-to-average power ratio (PAPR) is one of the main drawbacks of multicarrier code division multiple access (MC-CDMA) system. To alleviate this problem, in this paper, we propose a novel user grouping scheme for PAPR reduction in the downlink of MC-CDMA. The basic principle is to partition the users into subgroups, and generate multiple alternatives to achieve considerable PAPR reduction. The proposed scheme can be regarded as a modified version of partial transmit sequence (PTS), but with improved performance. And simulation results show that the user grouping scheme is more effective than the conventional PTS in MC-CDMA system.
Keywords :
code division multiple access; MC-CDMA system; PAPR; PTS; multicarrier code division multiple access system; partial transmit sequence; peak-to-average power ratio; Downlink; Frequency diversity; High power amplifiers; Intersymbol interference; Multicarrier code division multiple access; Nonlinear distortion; OFDM; Partial transmit sequences; Peak to average power ratio; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-0263-2
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2007.216
