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

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.

[1]  Monisha Ghosh,et al.  Analysis of the effect of impulse noise on multicarrier and single carrier QAM systems , 1996, IEEE Trans. Commun..

[2]  Jean Armstrong,et al.  Decision directed impulse noise mitigation for OFDM in frequency selective fading channels [DVB-T example] , 2004, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..

[3]  Timothy C. Giles.  On the design of HF radio modems / Timothy C. Giles. , 1995 .

[4]  Norihiko Morinaga,et al.  Statistical model of microwave oven interference and optimum reception , 1998, ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220).

[5]  J. Lago-Fernández,et al.  DVB-T Modelling impulsive interference in — statistical analysis , test waveforms and receiver performance , 1998 .

[6]  Sergey V. Zhidkov,et al.  Performance analysis and optimization of OFDM receiver with blanking nonlinearity in impulsive noise environment , 2006, IEEE Transactions on Vehicular Technology.

[7]  S. V. Zhidkov,et al.  Impulsive noise suppression in OFDM-based communication systems , 2003, IEEE Trans. Consumer Electron..

[8]  Yuping Zhao,et al.  Joint Estimation for Both AGC and DC Based on Distribution Function for OFDM Systems , 2008, 2008 IEEE International Conference on Communications.

[9]  Sergey V. Zhidkov,et al.  Analysis and comparison of several simple impulsive noise mitigation schemes for OFDM receivers , 2008, IEEE Transactions on Communications.

[10]  Pierre Duhamel,et al.  Impulsive noise cancellation in multicarrier transmission , 2005, IEEE Transactions on Communications.