Title :
An Improved Clipping Scheme Based on TR for PAPR Reduction in OFDM Systems
Author :
Wu, Chengyong ; Lu, You ; Liu, Guanghui
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Tone reservation (TR) is one of the most attractive techniques to reduce peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. In this paper, an improved clipping and filtering method based on TR is proposed. The new approach combines ordinary clipping and deep clipping while adjusting the threshold and the depth factor of clipping. Compared with the conventional clipping and filtering algorithm based on TR, the proposed scheme offers better PAPR reduction performance without increasing the computational complexity.
Keywords :
OFDM modulation; filtering theory; OFDM system; PAPR reduction; clipping scheme; depth factor; filtering method; orthogonal frequency division multiplexing; peak-to-average power ratio; threshold factor; tone reservation; Computational complexity; Digital video broadcasting; Filtering; Noise; Peak to average power ratio; Time domain analysis; OFDM; clipping and filtering; peak-to-average power ratio; tone reservation;
Conference_Titel :
Computer and Information Technology (CIT), 2012 IEEE 12th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-4873-7
DOI :
10.1109/CIT.2012.128
