Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31837
Mitigation of ISI for Next Generation Wireless Channels in Outdoor Vehicular Environments

Authors: Mohd. Israil, M. Salim Beg


In order to accommodate various multimedia services, next generation wireless networks are characterized by very high transmission bit rates. Thus, in such systems and networks, the received signal is not only limited by noise but - especially with increasing symbols rate often more significantly by the intersymbol interference (ISI) caused by the time dispersive radio channels such as those are used in this work. This paper deals with the study of the performance of detector for high bit rate transmission on some worst case models of frequency selective fading channels for outdoor mobile radio environments. This paper deals with a number of different wireless channels with different power profiles and different number of resolvable paths. All the radio channels generated in this paper are for outdoor vehicular environments with Doppler spread of 100 Hz. A carrier frequency of 1800 MHz is used and all the channels used in this work are such that they are useful for next generation wireless systems. Schemes for mitigation of ISI with adaptive equalizers of different types have been investigated and their performances have been investigated in terms of BER measured as a function of SNR.

Keywords: Mobile channels, Rayleigh Fading, Equalization, NMLD.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1239


[1] Yoshihiko Akaiwa, Introduction to digital mobile communication. Canada: John wiley and sons 1997.
[2] M. Bhat and M. Salim Beg, "Computer simulation and modeling of high speed data transmission over mobile radio links", Journal of Institution of Engineers (I), vol. 77, pp. 20-23, Sept. 1996.
[3] A.A.M. Saleh and R.A. Valenzeula, "A Statistical model for indoor multipath propagation" IEEE Journal on selected area in communication, Vol. JSAC-5, No.2, pp. 128-133, 1987.
[4] M. Israil and M. Salim Beg, "Performance Assessment of Adaptive equalizers for indoor mobile Channel", paper is presented in the National Conference on Modern Trends in Electronics Communication System (MTECS-2008), 8-9 March, 2008, AMU Aligarh pp. 230-234.
[5] M. Salim Beg and M. Israil, "Adaptive Equalization for Indoor Fading Channel", Paper presented in the National Conference on Emerging Trends in Communication and Computing (ETCC-07), 27-28 July 2007, NIT Hamirpur, pp. 382-385.
[6] T.A. Sexton and K. Pahlavan, "Channel modeling and adaptive equalization of indoor radio channels", IEEE Journal Selected Areas in Communications, vol. 7, January 1989, pp. 114-121.
[7] T. S. Rappaport, Wireless Communications Principles and Practice. New Jersey: Prentice Hall, 1996, pp. 197-216.
[8] A. P. Clark, "Near-Maximum-Likelihood Detections Process", Jordan International Electrical and Electronics Engineering Conference, April 28- May 1, 1985, pp 132-136.
[9] A. P. Clark, "Techniques for simplifying some Near-Maximum- Likelihood Detectors", IEE Proc., Vol. 137, Pt I, No. 5, October 1990.
[10] M. N. Muhayiddin and M. Salim Beg, "Performance Analysis of NML Detection for Next Generation Wideband Mobile Radio Applications", Proc. Int. Conf. on Information, Communications, and Signal Processing (ICICS2001), Oct. 2001, Singapore, paper no. 1A3.3 (in CDROM).
[11] A. P. Clark, S.G. Jayasinghe, "Channel estimation of land mobile radio systems", IEE Proc. Vol. 134, July 1987, pp. 383-393.
[12] M. Israil and M. Salim Beg, "Performance of some detectors for outdoor mobile radio channels with severe distortion" The Mediterranean Journal of electronics and communications, vol. 5, No. 2, pp. 58-65, 2009.
[13] Matthias Patzold, Mobile fading channels. USA: Johan Wiley and Sons Ltd, 2002.
[14] A .P. Clark, S. G. Jayasinghe, "Channel estimation of land mobile radio systems", IEE Proc. Vol. 134, July 1987, pp. 383-393.
[15] M. Salim Beg, S.C. Tan and H. Hazemi, "Performance Assessment of Some Adaptive Equalizers in Mobile Radio Environments", Proc. International Symposium. on Wireless Personal Multimedia Communications, Bangkok, Thailand, 2000, pp. 761-766
[16] J. Fuhl, J. P. Rossei, E. Bonek., "High-resolution 3-D direction-ofarrival determination for urban mobile radio", IEEE Trans. Antennas Propagation, Vol. 45, No. 4, 1997, pp. 672-682.