IJBTT

Performance Improvement in OFDM System with Interleaving and Blanking over Impulse Noise Environment

	International Journal of Engineering Trends and Technology (IJETT)
	© 2014 by IJETT Journal
	Volume-9 Number-7
	Year of Publication : 2014
	Authors : Merin Elsa Mathew , J.Jeevitha Reethu K , Anusha Chacko
	10.14445/22315381/IJETT-V9P267

Citation 

Merin Elsa Mathew , J.Jeevitha , Reethu K , Anusha Chacko. "Performance Improvement in OFDM System with Interleaving and Blanking over Impulse Noise Environment", International Journal of Engineering Trends and Technology(IJETT), V9(7),347-352 March 2014. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract

OFDM is a relatively new way to the field of digital communication but is finding more and more use due to its high spectral efficiency and robustness against interfering signal. Impulse noise is one of the major factors that can cause severe bit error performance degradation in OFDM systems. The impulse noise is usually of very short duration compared to symbol duration in parallel transmission. For both wired and wireless transmission, the frequency-selective fading is another significant source of disturbances for OFDM applications. The presence of these types of disturbances cause reliable communication difficult and also affects all the sub carriers in a symbol due to the Fast Fourier Transform operations at the receiver. TDI in conjunction with a two-level threshold-based blanking scheme is used to combat the effects of multipath propagation as well as IN. For the better performance of the system interleaving is used before and after the IFFT operation. An OFDM system with 64 qam modulation is considered. Gated Gaussian model is considered as the impulse noise model and compared the performance of different equalizers.

References

[1] M. Mirahmadi, Member, IEEE, A. Al-Dweik, Senior Member, IEEE, and A. Shami, Senior Member, IEEE, BER Reduction of OFDM Based Broadband Communication Systems over Multipath Channels with Impulsive Noise
[2] Khalifa Al-Mawali, Amin Z. Sadik, and Zahir M. HussainSchool of Electrical & Computer Engineering, RMIT University, Melbourne, Australia,(2008)” Joint Time-domain/Frequency-domain Impulsive Noise Reduction in OFDM-based Power Line Communications”,IEEE Telecommunication Networks and Applications Conference.
[3] D.Middleton,”Canonical and quasi-canonical probability models of Class A interfernces,”IEEE Trans.Electromagn.Compat.,vol.EMC-25,pp.76-106,May
[4] Renfei Liu • Te-Lung Kung • Keshab K. Parhi” Impulse Noise Correction in OFDM Systems”, Springer Science,Business Media New York 2013.
[5] Ulrich Epple, Member, IEEE, Dmitriy Shutin, Member, IEEE, and Michael Schnell, Senior Member, IEEE,(2013),” Mitigation of Impulsive Frequency-Selective Interference in OFDM Based Systems” IJSER.
[6] Renfei Liu ,Te-Lung Kung, Keshab K. Parhi,(2013),” Impulse Noise Correction in OFDM Systems”, J Sign Process Syst, DOI 10.1007/s11265-013-0782-y.
[7] Seema Arora, Student Member, IEEE, Vinay Kumar ChandnaSenior Member IEEE and Mini S. Thomas, Senior Member, IEEE,(2012),” Performance Analysis of 16-QAM using OFDM for Transmission of Data over Power Lines”.
[8] Anil Mengi and A.J Han Vick(2010),”Successsive Impulse Noise Supression in OFDM”, IEEE International Symposium on Power Line Communications and Its Applications (ISPLC).
[9] Ulrich Epple, Member, IEEE, Dmitriy Shutin, Member, IEEE, and Michael Schnell, Senior Member, IEEE,(2013),” Mitigation of Impulsive Frequency-Selective Interference in OFDM Based Systems” IJSER
[10] Sergey V. Zhidkov,(2003)” Impulsive Noise Suppression in OFDM Based Communication Systems”, IEEE Transactions on Consumer Electronics, Vol. 49, No. 4, NOVEMBER 2003.
[11] Renfei Liu and Keshab K. Parhi (2009),” Sparse Severe Error Removal in Ofdm Demodulators For Erasure Channels”, IEEE, 978-1-4244-4335-2/09
[12] Jürgen Häring and A. J. Han Vinck, Senior Member, IEEE, (2003)” Iterative Decoding of Codes Over Complex Numbers for Impulsive Noise Channels”, IEEE Transactions On Information Theory, Vol. 49, No. 5.
[13] Joachim Hagenauer, Fellow, ZEEE, Elke Offer, and Lutz Papke, (1996),” Iterative Decoding of Binary Block and Convolution Codes” IEEE Transactions On Information Theory, Vol. 42, No. 2.
[14] Jack Keil Wolf, (1983)” Redundancy, the Discrete Fourier Transform, and Impulse Noise Cancellation” IEEE Transactions On Communications, Vol. Com-31, No.3.
[15] Gagan Rath and Christine Guillemot (2004), “Frame-Theoretic Analysis of DFT Codes With Erasures”, IEEE Transactions On Signal Processing, Vol. 52, No. 2.
[16] Haring, J., & Han Vinck,A J. (2000).”OFDM Transmission corrupted by impulse noise”,In proceedings international symposium powerline communications(ISPLC)(pp.9-14).
[17] Evio A.Rocha,Wamberto J.L.de Queiroz,Marcelo S.Alencar,”Analysis of the Gated Impulsive Noise in Optimium Receivers”

Keywords
OFDM, Impulse noise, FFT, IFFT, Interleaving.