Reduction of peak factor in orthogonal multicarrier modulation by amplitude limiting and coding

Author

Wulich, D. ; Goldfeld, L.

Author_Institution

Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

Volume

47

Issue

1

fYear

1999

fDate

1/1/1999 12:00:00 AM

Firstpage

18

Lastpage

21

Abstract

A main disadvantage of orthogonal multicarrier modulation is that it exhibits a high peak-to-average-power ratio (PAPR). Because of this, all circuits between the output of the modulator and the input of the demodulator must be linear within a large dynamic range to avoid distortions and spectral spreading. It is therefore desirable to limit the PAPR of the multicarrier signal. A method based on amplitude limiting and forward error correcting (AL-FEC) coding is proposed for reduction of the PAPR. The performance of the AL-FEC is compared to two methods, based on block coding, specially constructed to reduce the PAPR. The AL-FEC is superior as compared to the existing methods. Moreover, its practical realization is very simple for any number of carriers

Keywords

OFDM modulation; block codes; error statistics; forward error correction; AL-FEC; BER analysis; amplitude limiting; block coding; demodulator; distortions; forward error correction; large dynamic range; linear circuits; modulator; multicarrier signal; orthogonal multicarrier modulation; peak factor reduction; peak-to-average-power ratio; spectral spreading; Amplitude modulation; Bit error rate; Circuits; Demodulation; Dynamic range; Error correction codes; Forward error correction; Modulation coding; OFDM; Peak to average power ratio;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.747808

Filename

747808