An efficient impulsive noise mitigation scheme for over-sampled OFDM systems

Author

Zhang, Xiaoxin ; Zhao, Yuping ; Zou, Li

Author_Institution

State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China

Volume

55

Issue

2

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

360

Lastpage

365

Abstract

Impulsive noise severely affects the performance of wireless communication systems. In orthogonal frequency division multiplexing (OFDM) systems, detecting impulsive interference is challenging since both OFDM signals and impulsive noise follow Gaussian distributions. This paper proposes windowing nonlinearity scheme to detect and remove the over-sampled impulsive interference in OFDM systems. The analysis of the false detection probability (FDP) and successful detection probability (SDP) is given. The results indicate that the proposed scheme detects impulsive noise efficiently. In addition, the closed-form expressions for the FDP and SDP of blanking nonlinearity scheme which is widely used to remove impulsive interference are also derived.

Keywords

Gaussian distribution; OFDM modulation; impulse noise; radiocommunication; Gaussian distributions; closed-form expressions; false detection probability; impulsive interference detection; impulsive noise mitigation scheme; orthogonal frequency division multiplexing systems; oversampled OFDM systems; successful detection probability; windowing nonlinearity scheme; wireless communication systems; AWGN; Additive white noise; Blanking; Closed-form solution; Gaussian distribution; Gaussian noise; Interference; Low pass filters; Noise level; OFDM; Impulsive noise, orthogonal frequency; division multiplexing (OFDM), over-sampling, blanking; nonlinearity, windowing nonlinearity;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2009.5174394

Filename

5174394