IMPROVED EXPRESSION FOR THE AVERAGE BEP OF MC-CDMA SYSTEMS WITH MRC DIVERSITY RECEPTION

Multi-carrier code division multiple access (MC-CDMA) which is a combination of multicarrier modulation and code division multiple access has gained wide acceptance in recent works because of its many advanced features. This paper gives an evaluation of the bit error probability (BEP) of an uplink MC-CDMA system using maximal-ratio combining (MRC) receivers over a Nakagami-m fading channel. An improved and accurate BEP expression for uplink with MRC receivers is derived. Numerical results in term of average BEP show that the proposed expression has excellent accuracy in different conditions, and could serve as an attractive alternative to previously derived expression for evaluating the average BEP of an uplink MC-CDMA system. Keywords: High capacity wireless communications, MC-CDMA uplink system, diversity reception, maximal-ratio combining, BEP evaluation.

Keywords:

High capacity wireless communications, MC-CDMA uplink system, diversity reception, maximal-ratio combining BEP evaluation,

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N. Yee, J. P. Linnartz, G. Fettweis, "Multi-Carrier CDMA in Indoor Wireless Radio Networks", Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC’93), Yokohama, Japan, 1993, pp. 109-113.
S. Hara, R. Prasad, "Overview of Multicarrier CDMA", IEEE Commun. Mag., vol. 35, no. 12, pp. 126-133, 1997.
S. Hara, R. Prasad, "Design and Performance of Multicarrier CDMA System in Frequency-Selective Rayleigh Fading Channels", IEEE Trans. Veh. Technol., vol. 48, no. 5, pp. 1584-1595, 1999.
L. Vandendorpe, "Multitone Spread-Spectrum MultipleAccess Communications-System in a Multipath Rician Fading Channel", IEEE Trans. Veh. Technol., vol. 44, no. 2, pp. 327-337, 1995.
E. A. Sourour, M. Nakagawa, "Performance of Orthogonal Multicarrier CDMA in a Multipath Fading Channel", IEEE Trans. Commun., vol. 44, no. 3, pp. 356-367, 1996.
T. Mueller, K. Brueninghaus, H. Rohling, "Performance of Coherent OFDM-CDMA for Broadband Mobile Communications", Wireless Personal Commun., vol. 2, no. 4, pp. 295- 305, 1996.
K. Fazel, S. Kaiser, M. Schnell, "A Flexible and High Performance Cellular Mobile Communications Systems Based on Orthogonal Multi-Carrier SSMA", Wireless Personal Commun., vol. 2, no. 1, pp. 121-144, 1996.
G. L. Stuber, "Principles of Mobile Communications", Kluwer Academic Publishers, Boston, 1996.
Y. P. Yang, S. L. Jong, J. C. Liu, C. H. Liu, "Performance of Up-Link MC-CDMA System with Frequency Offset and Imperfect Channel Estimation Simultaneously over Nakagami Fading Channels", Wireless Personal Commun., vol. 27, no. 3, pp. 247-265, 2003. A General Formula
M. Nakagami, "The m-Distribution of Intensity Distribution of Rapid Fading", Statistical Methods of Radio Wave Propagation, New York, Pergamon, 1960.
N. C. Beaulieu, C. Cheng, "An Efficient Procedure for Nakagami-m Fading Simulation", Proc. Global Telecommunications Conference (GLOBECOM '01), San Antonio, USA, 2001, pp. 3336-3342.
I. Ghareeb, M. Abu-Sbeih, "Performance of MFSK Signals with Postdetection Square-Law Diversity Combining in Arbitrarily Correlated Nakagami-m fading channels", IEEE Commun. Lett., vol. 8, no. 2, pp. 108- 110, 2004.
M. Abdel-Hafez, Z. X. Li, M. Latva-Aho, "Evaluation of Uplink and Downlink MC-CDMA Receivers in Generalized Fading Channels", IEICE Trans. Commun., vol. E87B, no. 1, pp. 88-96, 2004.
M. S. Patterh, T. S. Kamal, B. S. Sohi, "BER Performance of MQAM with L-branch MRC Diversity Reception over Correlated Nakagami-m Fading Channels", Wirel. Commun. Mob. Comput., vol. 3, no. 3, pp. 397-406, 2003.
Z. Li, M. Latva-aho, "BER Performance Evaluation for MC-CDMA Systems in Nakagami-m Fading", Electron. Lett., vol. 38, no. 24, pp. 1516-1518, 2002.
A. B. Djebbar et al., "Derivation of New Expressions of Bit Error Rate for MC-CDMA System in Nakagami Fading Channel", AEÜ Int. J. Electron. Commun., vol. 57, no. 6, pp. 395-402, 2003.
S. Kirkpatrick, C. D. Gelatt, M. P. Vecchi, "Optimization by Simulated Annealing", Science, vol. 220, no. 4598, pp. 671-680, 1983.
N. Metropolis et. al., "Equation of the State Calculation by Fast Computing Machines", J. Chem. Phys., vol. 21, no. 6, pp. 1087-1092, 1953.
D. S. Johnson et. al., "Optimization by Simulated Annealing: An Experimental Evaluation Part-I: Graph Partitioning", Operations Res., vol. 37, no. 6, pp. 865-892, 1989.
W. C. V. Etten, "Introduction to Random Signals and Noise", John Wiley & Sons, England, 2005.