Title :
A Low-Complexity User Grouping Scheme for PAPR Reduction in MC-CDMA Systems Using Joint Spreading and IFFT
Author :
Lilin, Dan ; Peng, Cheng ; Yue, Xiao ; Shaoqian, Li
Author_Institution :
Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In this letter, a low-complexity structure of PAPR reduction scheme, user grouping, in multicarrier code-division multiple access (MC-CDMA) is introduced. The proposed structure is based on joint spreading and inverse fast Fourier transform (S-IFFT) processing, and a class of low-complexity structure of user grouping scheme is proposed on the tradeoff between computational complexity and storage size. Comparison with the conventional PTS schemes, it shows that the proposed low-complexity scheme can achieve similar PAPR reduction with lower complexity.
Keywords :
code division multiple access; combined source-channel coding; fast Fourier transforms; multiuser channels; IFFT; MC-CDMA systems; PAPR reduction; computational complexity; inverse fast Fourier transform processing; joint spreading; low-complexity user grouping scheme; multicarrier code-division multiple access; storage size; Computational complexity; Downlink; Fast Fourier transforms; Multiaccess communication; Multicarrier code division multiple access; Partial transmit sequences; Peak to average power ratio; Performance analysis; Radio transmitters; Signal processing;
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th
Conference_Location :
Anchorage, AK
Print_ISBN :
978-1-4244-2514-3
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2009.5378725
