Title :
Generalized interior-point method for constrained peak power minimization of OFDM signals
Author :
Yu, Zhenhua ; Baxley, Robert J. ; Zhou, G. Tong
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Tech, Atlanta, GA, USA
Abstract :
In this paper we present two results on reducing the peak power of orthogonal frequency division multiplexing (OFDM) symbols via constellation extension (CE). The first result is a derivation of the interior-point method (IPM) algorithm needed to find the optimal distortion set, where the distortion is constrained by convex functions. Next we optimize the parameters of a hybrid CE constraint set to minimize the BER. Numerical examples are provided to illustrate the findings.
Keywords :
OFDM modulation; convex programming; error statistics; IPM algorithm; OFDM signal; OFDM symbol; bit error rate; constellation extension; constrained peak power minimization; convex function; generalized interior-point method; hybrid CE constraint set; optimal distortion set; orthogonal frequency division multiplexing symbol; peak power reduction; peak to average power ratio; Bit error rate; Nonlinear distortion; PSNR; Peak to average power ratio; Time domain analysis; OFDM; PAPR reduction; constellation extension; interior-point method;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2011 IEEE International Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0538-0
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2011.5946250
