Effects of clipping and filtering on the performance of OFDM

Author

Li, Xiaodong ; Cimini, Leonard J., Jr.

Author_Institution

Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA

Volume

2

Issue

5

fYear

1998

fDate

5/1/1998 12:00:00 AM

Firstpage

131

Lastpage

133

Abstract

Orthogonal frequency division multiplexing (OFDM) is an attractive technique for wireless communication applications. However, an OFDM signal has a large peak-to-mean envelope power ratio, which can result in significant distortion when passed through a nonlinear device, such as a transmitter power amplifier. We investigate, through extensive computer simulations, the effects of clipping and filtering on the performance of OFDM, including the power spectral density, the crest factor, and the bit-error rate. Our results show that clipping and filtering is a promising technique for the transmission of OFDM signals using realistic linear amplifiers.

Keywords

filtering theory; frequency division multiplexing; modulation; power amplifiers; radio transmitters; radiofrequency amplifiers; BER; OFDM signal transmission; bit-error rate; clipping; computer simulations; crest factor; distortion; filtering; linear amplifiers; modulation; nonlinear device; orthogonal frequency division multiplexing; peak-to-mean envelope power ratio; power spectral density; transmitter power amplifier; wireless communication applications; Application software; Bit error rate; Computer simulation; Filtering; Nonlinear distortion; Nonlinear filters; OFDM; Power amplifiers; Transmitters; Wireless communication;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.673657

Filename

673657