naa a22 4500 510791522 CHVBK 20180411083321.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11277-012-0820-2 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0820-2 Reduction of PAPR of OFDM Signals Using Nonlinear Companding Transform [Elektronische Daten] [Yong Wang, Jianhua Ge, Lihua Wang, Jing Li] In this paper, we propose and evaluate a novel nonlinear companding transform (NCT) scheme for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems. The key idea of the proposed scheme is to transform the original Gaussian-distributed OFDM signals into a specific statistics form, whose target probability density function is defined by a piecewise function with an inflexion point. By properly choosing the transform parameters, this scheme can enable more flexibility and freedom in the companding form so that a favorable tradeoff between PAPR reduction and bit error rate (BER) performance can be achieved. Moreover, compared to existing NCT techniques, this scheme dramatically decreases the impact of companding distortion on the BER performance to reach a given PAPR level. The analytical expressions regarding the achievable transform gain in PAPR, complementary cumulative density function, attenuation coefficient, and selection criteria of transform parameters are derived. Simulation results justify the significance and accuracy of the analytical expressions presented. Springer Science+Business Media, LLC., 2012 Orthogonal frequency division multiplexing (OFDM) nationallicence Peak-to-average power ratio (PAPR) nationallicence Nonlinear companding transform(NCT) nationallicence Probability density function (PDF) nationallicence Wang Yong State Key Laboratory of Integrated Service Networks, Xidian University, 710071, Xi'an, China aut Ge Jianhua State Key Laboratory of Integrated Service Networks, Xidian University, 710071, Xi'an, China aut Wang Lihua State Key Laboratory of Integrated Service Networks, Xidian University, 710071, Xi'an, China aut Li Jing State Key Laboratory of Integrated Service Networks, Xidian University, 710071, Xi'an, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 383-397 0929-6212 71:1<383 2013 71 11277 https://doi.org/10.1007/s11277-012-0820-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0820-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Yong State Key Laboratory of Integrated Service Networks, Xidian University, 710071, Xi'an, China aut NATIONALLICENCE 700 1- Ge Jianhua State Key Laboratory of Integrated Service Networks, Xidian University, 710071, Xi'an, China aut NATIONALLICENCE 700 1- Wang Lihua State Key Laboratory of Integrated Service Networks, Xidian University, 710071, Xi'an, China aut NATIONALLICENCE 700 1- Li Jing State Key Laboratory of Integrated Service Networks, Xidian University, 710071, Xi'an, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 383-397 0929-6212 71:1<383 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer