Title :
Choosing the Optimal Clipping Ratio for Clipping and Filtering PAR-Reduction Scheme in OFDM
Author :
Yu, Hua ; Wei, Gang
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou
Abstract :
Clipping and Filtering on the Oversampled signal samples (CFO) is a simply and effective peak-to-average power ratio (PAR) reduction method for OFDM signal. However, the PAR- reduction performance and the bit error ratio (BER) performance of CFO are conflicting with each other. An analysis framework is proposed to select the optimum clipping ratio (CR) which optimizes the consumed power-to-noise ratio (SNRC). Simulation shows CFO with the optimum CR can obtain about 2 dB SNRC gain compared to the original OFDM signal in the AWGN channel.
Keywords :
AWGN channels; OFDM modulation; filtering theory; signal sampling; AWGN channel; OFDM; optimal clipping ratio; oversampled signal clipping; oversampled signal filtering; peak-to-average power ratio reduction method; power-to-noise ratio; Bit error rate; Chromium; Digital filters; High power amplifiers; Information filtering; Information filters; Nonlinear distortion; OFDM; Peak to average power ratio; Power amplifiers;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.121
