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

fYear

2011

fDate

22-27 May 2011

Firstpage

3572

Lastpage

3575

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing (ICASSP), 2011 IEEE International Conference on

Conference_Location

Prague

ISSN

1520-6149

Print_ISBN

978-1-4577-0538-0

Electronic_ISBN

1520-6149

Type

conf

DOI

10.1109/ICASSP.2011.5946250

Filename

5946250