ZERO PADDING AND CYCLIC PREFIX FOR OFDM ON MULTIPATH RAYLEIGH FADING CHANNEL
Keywords:
OFDM, Zero Padding, Rayleigh fading, Multipath, BERAbstract
This article report simulation of OFDM over various multipath Rayleigh fading channel, with dicussion on the guard interval method. Techniques of guard interval employed are Cyclic Prefix and Zero Padding, each with a range of ratio from 1:1 to 16:1. The transmission are simulated over Rayleigh fading channel applying 1 to 4 paths in comparison. Observations on BER value for OFDM transceiver is done with 16- QAM as the base modulation. Overall, implementation of zero padding for guard interval in this work has resulted on better performance in compare with those of cyclic prefix. With zero padding of 8:1 on 64 packet data, it is optimum in compare with variety of others. The deviation of BER is however less than 0.001 within each channel type with various guard interval. For Rayleigh environment, the error increased significantly up to 2 paths, but tended to saturate for 3 and 4 paths.
Downloads
References
Hen-Geul Yeh; Ingerson, P., "Software-defined radio for OFDM transceivers," in Systems
Conference, 2010 4th Annual IEEE , vol., no., pp.261-266, 5-8 April 2010.
Palekar, AD; Ingole, PV., “OFDM system using FFT and IFFT” IJARCSSE vol. 3. Issue 12.
December 2013.
Bouanen, M.; Gagnon, F.; Kaddoum, G.; Couillard, D.; Thibeault, C., "An LPI design for secure
OFDM systems," in MILITARY COMMUNICATIONS CONFERENCE, 2012 - MILCOM 2012
, vol., no., pp.1-6, Oct. 29 2012-Nov. 1 2012.
Xuefei Li; Tuzlukov, V., "OFDM system performance with M-QAM under employment of
generalized receiver," in Information Science, Electronics and Electrical Engineering (ISEEE),
International Conference on , vol.2, no., pp.1156-1160, 26-28 April 2014.
Paujia, Nia Sipa; Astharini, Dwi; Samijayani, Octarina Nur; “SER and BER analysis using GNU
Radio for PSK and QAM Modulation” in Proceedings of ISSTIN. pp. 136-141. Oct 2012.
Sharef, Z.T.; Alaradi, A.E.; Sharef, B.T., "Performance Evaluation for WiMAX 802.16e OFDMA
Physical Layer," in Computational Intelligence, Communication Systems and Networks
(CICSyN), 2012 Fourth International Conference on , vol., no., pp.351-355, 24-26 July 2012.
Angrisani, L.; Napolitano, A., "Modulation Quality Measurement in WiMAX Systems Through a
Fully Digital Signal Processing Approach," in Instrumentation and Measurement, IEEE
Transactions on , vol.59, no.9, pp.2286-2302, Sept. 2010.
Wamicha, Joseph and Winberg, Simon. “IEEE 802.11 OFDM Software Defined Radio Beacon
Frame Transmission”. IEEE Africon. pp. 1-6. IEEE, 2011.
Dogan, H.; Yildiz, H.; Cooklev, T.; Acar, Y., "Coded OFDM wireless systems with generalized
prefix," in Application of Information and Communication Technologies (AICT), 2012 6th
International Conference on , vol., no., pp.1-4, 17-19 Oct. 2012.
Mohammed, U.S.; Tohamy, A., "A low complexity OFDM system with minimum
intersymbol interference," in Wireless and Mobile Networking Conference (WMNC), 2012 5th
Joint IFIP , vol., no., pp.22-29, 19-21 Sept. 2012.
Hofbauer, C.; Huemer, M., "A study of data rate equivalent UW-OFDM and CP-OFDM
concepts," in Signals, Systems and Computers (ASILOMAR), 2012 Conference Record of the
Forty Sixth Asilomar Conference on , vol., no., pp.173-177, 4-7 Nov. 2012.
Craciunescu, R.; Halunga, S.; Fratu, O., "Guard Interval effects on OFDM /BPSK
transmissions over fading channels," in Telecommunications Forum (TELFOR), 2012 20th , vol.,
no., pp.471-474, 20-22 Nov. 2012.
Islam, MS; Barai, GR; Mahmood, A., “Performance analysis of different modulation schemes
using OFDM techniques in Rayleigh fading channel”, International Journal of Fundamental
Physical Sciences IJFPS, Vol.1, No.1, pp. 22-27, March, 2011
Abhishek, K; Amita, Y; Neha, J., “Performance Elevation Criteria for OFDM under AWGN
fading channel using IEEE 802.11” IJSCE. 2011.
Harada, H; Prasad, R; “Simulation and software Radio for Mobile Communications”, Artech
House Publishers, 2002
Mathew, B.; George, P.; Nathan, R.V.; Shukkor, S.; Lakshmi, A.N., "BER comparison of
DCT and FFT based OFDM systems in AWGN and Rayleigh fading channels with different
modulation schemes," in Emerging Research Areas and 2013 International Conference on
Microelectronics, Communications and Renewable Energy (AICERA/ICMiCR), 2013 Annual
International Conference on , vol., no., pp.1-4, 4-6 June 2013.
