naa a22 4500 510791999 CHVBK 20180411083323.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-012-0932-8 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0932-8 Design of Low PAPR Fundamental Modulation Waveform for Transform Domain Communication System [Elektronische Daten] [Su Hu, Gang Wu, Yue Xiao, Xia Lei, Shaoqian Li] To utilize white space spectrum in radio environment, transform domain communication system (TDCS) has been proposed to realize an overlay cognitive radio communication system by using spectrum bin nulling and frequency domain spreading. Being similar to OFDM systems, TDCSs still suffer from the problem of high peak to average power ratio (PAPR) in present of high power amplifier. In this paper, a distortionless PAPR reduction method is proposed for TDCS, namely clipping and phase replacement (CPR). Following this method, the clipping noise-dirty phase vector is replaced by an appropriate replacement, which is selected from the identical phase mapping space to avoid systematic performance degradation. Owing to the high computational complexity from exhaust search, an efficient implementation of CPR method is proposed through the iterative PAPR reduction and phase replacement. Moreover, some considerations for practical applications, such as imperfect spectrum sensing and the number of phase taps, are considered. Analytic and simulation results demonstrate that the distortionless CPR PAPR reduction method is a preferable candidate for TDCSs in both the single-user and multi-user scenarios. Springer Science+Business Media New York, 2012 Cognitive radio nationallicence Transform domain communication system nationallicence Peak to average power ratio nationallicence Imperfect spectrum sensing nationallicence Hu Su National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut Wu Gang National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut Xiao Yue National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut Lei Xia National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut Li Shaoqian National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/3(2013-08-01), 2215-2229 0929-6212 71:3<2215 2013 71 11277 https://doi.org/10.1007/s11277-012-0932-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0932-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hu Su National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut NATIONALLICENCE 700 1- Wu Gang National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut NATIONALLICENCE 700 1- Xiao Yue National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut NATIONALLICENCE 700 1- Lei Xia National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut NATIONALLICENCE 700 1- Li Shaoqian National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/3(2013-08-01), 2215-2229 0929-6212 71:3<2215 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer