The effects of periodic impulsive noise on OFDM

Author

Shongwe, Thokozani ; Han Vinck, A.J. ; Ferreira, Hendrik C.

Author_Institution

Dept. of Electr. & Electron. Eng. Sci., Univ. of Johannesburg, Johannesburg, South Africa

fYear

2015

fDate

March 29 2015-April 1 2015

Firstpage

189

Lastpage

194

Abstract

The effect of periodic impulsive (short duration) noise on OFDM is investigated. We present results on the nature of periodic impulsive noise, showing that the PDF of periodic impulsive noise is not exactly Gaussian. We also present results showing that periodic impulsive noise can be more devastating to OFDM compared to random impulsive noise. This is because periodic impulsive noise energy is not spread by the FFT on the receiver side of the OFDM, instead it appears periodic in the frequency domain. Results showing the effect of nulling to mitigate periodic impulsive noise are presented. We suggest a simple short block code (as opposed to long block codes) that can effectively combat the effects of periodic impulsive noise.

Keywords

OFDM modulation; block codes; carrier transmission on power lines; fast Fourier transforms; impulse noise; FFT; OFDM; PDF; frequency domain; long block code; orthogonal frequency division multiplexing; periodic impulsive noise; power line communication; simple short block code; Bit error rate; Block codes; Communication systems; OFDM; Signal to noise ratio; OFDM; Periodic impulse noise; block code; error correcting coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Line Communications and its Applications (ISPLC), 2015 International Symposium on

Conference_Location

Austin, TX

Type

conf

DOI

10.1109/ISPLC.2015.7147612

Filename

7147612