ADAPTIVE CYCLIC PREFIX LENGTH FOR CONVOLUITIONAL CODE OFDM SYSTEM IN FREQUENCY SELECTIVE CHANNEL

Article Sidebar

download
Published: 2012-01-01
DOI: https://doi.org/10.31026/j.eng.2012.01.04

Main Article Content

Ashwaq A. Abed Aljanaby
Malathe Salah AL -Deen Salah AL -Deen

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is one of recent years multicarrier modulation used in order to combat the Inter Symbol Interference (ISI) introduced by frequency selective mobile radio channel. The circular extension of the data symbol, commonly referred to as cyclic prefix is one of the key elements in an OFDM transmission scheme. This paper study The influence of the cyclic prefix duration on the BER performance of an OFDM-VCPL (Orthogonal frequency division multiplexing - Variable Cyclic Prefix Length) system and the conventional OFDM system with frame 64-QAM modulation is evaluated by means of computer simulation in a multipath fading channel. The adaptation of CP is done with respect to the delay spread estimation of the channel.

Article Details

Issue

Vol. 18 No. 01 (2012): Journal of Engineering

Section

Articles
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

 
 

How to Cite

“ADAPTIVE CYCLIC PREFIX LENGTH FOR CONVOLUITIONAL CODE OFDM SYSTEM IN FREQUENCY SELECTIVE CHANNEL” (2012) Journal of Engineering, 18(01), pp. 51–63. doi:10.31026/j.eng.2012.01.04.

References

•B.Sklar, "Rayleigh Fading Channels in Mobile Digital Communication System"IEEE Commun.Mag., July 1997

•Buthaina Mosa Omran “IMPROVEMENT TECHNIQUES FOR SATELLITE DIGITAL VIDEO BROADCASTING USING OFDM”,P.HD. Thesis, in electronic and communication engineering, University of Baghdad, 2007.

•Chini A., " Multicarrier Modulation in Frequency Selective Fading Channel",Ph.D.thesis, Carleton University, chapter 3, 1994

•Eero Maki-Esko, Mikko Valkama, and Markku Renfors,"Time-and Frequency – Selective Fading Channel",ICE University of Technology,Finland, 8 Jan 2007

•Fernando H. Gregorio,“802.11a - OFDM PHY Coding and Interleaving”, Helsinki University of Technology, Vol. 4, Issue 8, pp. 1-6, 2006

•Gregory E. Bottomley and Leif R. Wilhelmsson "Recycling the Cyclic Prefix in an OFDM System" 2006 IEEE

•Haris Vikalo, Babak Hassibi, Bertrand HochWald,and Thomas Kailath "On the Capacity of Frequency –Selective Channels in Training-Based Transmission Schemes" IEEE transaction on signal processing, VOL,52,NO.9,SEPTEMBER 2004

•Jeroen Theeuwes, Frank H.P Fitzek, Carl Wijting,"Multihopping for OFDM Wireless Networks"Center for TeleInFrastruKtur (CTiF),Aalborg University,June 2004

•Kamran arshad, “Channel Estimation In OFDM Systems”, M.Sc. Thesis, King Fahd University of Petrleum and Minerals, Dhahran, Saudi Arabia,2002

•Marius Oltean, Miranda Nafornita " The Cyclic Prefix Length Influence on OFDMTransmission BER", tom 48(62),Fascicola 2,2003

•Peter Fertl and Gerald Matz , "EFFICIENT OFDM CHANNEL ESTIMATION IN MOBILE ENVIRONMENTS BASED ON IRREGULAR SAMPLING" Gusshausstrasse 25/389,A-1040 Vienna,Austria,2009

•Van Nee,R.,Prasad,R.,2000 "OFDM for Wireless Multimedia Communications" Artech House, Boston,p.46.

Werner Henkel, Georg TaubÖck, Per Ödling, Per Ola BÖrjesson, Niklas Petersson" the Cyclic Prefix of OFDM/DMT-An Anaqlysis"2002 International Zurich Seminar on Broadband Communication Access- Transmission-Networking February 19- 21,ETH Zurich,Switzerland

•Yun Chiu, Dejan Markovic, Haiyun Tang, Ning Zhang " OFDM Receiver Design", EE225C Final Report, 12 December 2000

•ZHANG Zhao-yang, LAI Li-feng " Anovel OFDM transmission scheme with lengthadaptive Cyclic Prefix", paper, 2004