Time-domain impulse injection method for crest factor reduction 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

2012

fDate

5-8 Aug. 2012

Firstpage

832

Lastpage

835

Abstract

This paper treats the problem of crest factor reduction (CFR) for orthogonal frequency division multiplexing (OFDM) signals. The proposed impulse injection method reduces the crest factor of the time-domain signal by injecting judiciously designed complex-valued impulse in selected discrete-time locations while keeping both the in-band error vector magnitude (EVM) and out-of-band spectral emission under control. Numerical examples are provided to demonstrate the effectiveness of the proposed method.

Keywords

OFDM modulation; CFR; EVM; OFDM signals; complex-valued impulse; crest factor reduction; discrete-time locations; in-band error vector magnitude; orthogonal frequency division multiplexing; out-of-band spectral emission; time-domain impulse injection method; time-domain signal; Computational complexity; Distortion; Frequency domain analysis; OFDM; Time domain analysis; Vectors; Crest factor reduction (CFR); error vector magnitude (EVM); orthogonal frequency division multiplexing (OFDM); spectral emission mask;

fLanguage

English

Publisher

ieee

Conference_Titel

Statistical Signal Processing Workshop (SSP), 2012 IEEE

Conference_Location

Ann Arbor, MI

ISSN

pending

Print_ISBN

978-1-4673-0182-4

Electronic_ISBN

pending

Type

conf

DOI

10.1109/SSP.2012.6319835

Filename

6319835