Performance Improvement of OFDM Communication System in Rayleigh Fading Channel

	International Journal of P2P Network Trends and Technology (IJPTT)
	© 2015 by IJPTT Journal
	Volume - 5 Issue - 1
	Year of Publication : 2015
	Authors : Marwa Abdelfatah , k.A.Elbarbary , Adel Elhenawy
	DOI :  10.14445/22492615/IJPTT-V16P402

Citation

Marwa Abdelfatah , k.A.Elbarbary , Adel Elhenawy. "Performance Improvement of OFDM Communication System in Rayleigh Fading Channel". International Journal of P2P Network Trends and Technology (IJPTT), V5(1):30-37 Jan - Feb 2015, ISSN:2249-2615, www.ijpttjournal.org, Published by Seventh Sense Research Group.

Abstract

OFDM (orthogonal Frequency Division Multiplexing) is considered as a principal element in the development of the 4G of mobile system. The OFDM performance can be improved using the channel coding. The channel coding technique is a class of signal transformations designed to improve communication system performance. The work presented in this paper discusses the improvement of OFDM system performance using different channel coding techniques. These coding techniques include Reed Solomon, Convolutional, Concatenated (by combining Reed Solomon with Convolutional), and Interleaved concatenated coding techniques. Besides, a new algorithm produced to choose a good convolutional encoder design with a good distance property for a certain rate and memory registers. The simulation results will be provided for the Rayleigh fading channel model.

References

[1] Djamel Slimani and Redha Touhami, APPLICATION OF THE OFDM TECHNOLOGY ON THE FOURTH GENERATION NETWORK MOBILE SYSTEM, Scientific Instrumentation Laboratory. Electronics Department University of Ferhat Abbas Setif, ICIEM’10, MAY 9-10 Batna, Algeria
[2] Bernard Sklar, Digital Communications: Fundamentals and Applications, Prentice-Hall Inc., 2001.
[3] Bernard Sklar, Fundamentals of Turbo Codes, 2002.
[4] Jorge Castiñeira Moreira, Patrick Guy Farrell, Essentials of Error Control Coding, Wiley & Sons Inc., 2006.
[5] http://www.allsyllabus.com/aj/note/Information_Science/Information%20Theory%20and%20Coding/s11/CODING%20FOR%20BURST%20ERROR%20CORRECTION.php
[6] Husein A.A.Alenzi, Orthogonal Frequency Division Multiplexing, M.Sc Degree in Information Technology at the AHLIA University, 2009.
[7] Teddy Purnamirza, The Performance of OFDM in Mobile Radio Channel, M.Sc Degree in Engineering at University Technology Malaysia, 2005.
[8] Dushantha N. K. Jayakody, Leonardo O. Iheme, Erhan A. ?nce, Coded QPSK-OFDM for Data Transmission over Fading Channels, IEEE, 2010.
[9] Shimaa El-Sayed El-Tantawy, Comparative Study for Performance Analysis of Multiple Access Techniques on Communication Channels, A Thesis Submitted to the Department of Electrical Engineering for the Degree of Master of Science, Al-Azhar, 2010
[10] Sanjeev Kumar, Ragini Gupta, Bit Error Rate Analysis of Reed Solomon Code for Efficient Communication System, international journal of computer applications, 2011.
[11] Jeff Foerster and John Liebetreu, FEC Performance of Concatenated Reed-Solomon and Convolutional Coding with Interleaving, IEEE 802.16 Broadband Wireless Access Working Group, 2000.
[12] Chih-Peng Li, Wireless Information Transmission System Lab, National Sun Yat-Sen University, 2008.
[13] Venkatesan Guruswami, Introduction to Coding Theory: Reed-Solomon, BCH, Reed-Muller, and Concatenated Codes, CMU, 2010.
[14] IEEE Computer Society, and the IEEE Microwave Theory and Techniques Society, IEEE Standard for Wireless MAN-Advanced Air Interface for Broadband Wireless Access Systems, Amendment 2: Higher Reliability Networks,2013.

Keywords
OFDM, Rayleigh Fading, Channel Coding, Reed Solomon, Convolutional, Interleaver.