On an MC-CDMA System Operating with Distinctive Scenarios of Antenna

Joy Iong-Zong CHEN, Hau-Wei HUANG, Kai Zhi ZHUANG
DOI: 10.4236/eng.2009.12011                

Abstract

In this paper the impact of distinctive structure of antenna with branch correlation for an OFDM (orthogonal frequency division multiplexing)-based system, MC-CDMA (multi-carrier coded-division multiple-access) system, operating over the frequency selective fading environments is studied. For the reason of accordance with the working environments in the real world applications (urban areas) the correlated-Nakagami-m fading is adopted. Furthermore, the performance evaluation with average BER (bit error rate) formulas of MC-CDMA system with MRC (maximal ratio combining) diversity was derived with an alternative method of the complementary error function. The illustrated results are not only discussing the effect that comes from triangular, linear, and circular antenna array constructions, but the factors of branch correlation are also analyzed. Generally, it is known that the more the received branch number is, the more superior system performance of a multiple-access system will become. It is interesting to contrast to the geometric of the antenna array, that is, the little shape changing of the antenna is, the worse inferior system performance arrive at.

Keywords

Circular Antenna Array, Linear Antenna Array, MC-CDMA Systems, MRC Diversity, Nakagami-m Fading, Triangular Antenna Array

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	N. Yee, J. P. Linnartz, and G. Fettweis, “Multi-carrier CDMA in indoor wireless radio networks,” IEICE Transactions on Communication, Vol. E77-B, No. 7, pp. 900-904, July 1994.
[2]	Z. J. Kang and K. Yao, “Performance comparison of MC-CDMA over frequency-selective Nakagami-m and Rayleigh fading channels,” Vehicular Technology Conference, Vol. 6, pp. 4228-4232, September 2004.
[3]	E. A. Sourour and M. Nakagami, “Performance of orthogonal multicarrier CDMA in a multipath fading channel,” IEEE Transactions on Communication, Vol. 44, pp. 356-367, March 1996.
[4]	T. Kim, Y. Kim, J. Park, K. Ko, S. Choi, C. Kang, and D. Hong, “Performance of an MC-CDMA system with frequency offsets in correlated fading,” IEEE International Conference on ICC 2000, Vol. 2, pp. 1095-1099, June 2000.
[5]	J. Park, J. Kim, S. Choi, N. Cho, and D. Hong, “Performance of MC-CDMA systems in non-independent Rayleigh fading,” IEEE on ICC’ 99, Vol. 1, pp. 6-10, 506-510, June 1999.
[6]	Q. R. Shi and M. Latva-aho, “Exact error floor for downlink MC-CDMA with maximal ratio combining in correlated Nakagami fading channels,” 2002 International Zurich Seminar on Broadband Communications, pp. 37-1-37-5, February 20, 2002.
[7]	Q. Shi and M. Latva-aho, “Performance analysis of MC-CDMA in Rayleigh fading channels with correlated envelopes and phases,” IEE Proceedings: Communication, Vol. 150, No. 3, pp. 214-220, June 2003.
[8]	Z. Li and M. Latva-aho, “Erroe probability for MC-CDMA in Nakagami-m fading channels using equal gain combining,” IEEE International Conference on ICC 2002, Vol. 1, pp. 227-231, April 28-May 2, 2002.
[9]	M. S. Alouini, A. Abdi, and M. Kaveth, “Sum of gamma variates and performance of wireless communication systems over Nakagami-m fading channels,” IEEE Transactions on Vehicular Technology, Vol. 50, No. 6, pp. 1471-1480, November 2001.
[10]	M.Nakagami, “The m-distribution—A general formula of intensity distribution of rapid fading,” Statistic Methods of in Radio Wave Propagation, Pergamon Press, New York, pp. 3-36, 1960.
[11]	M. Schwartz, W. R. Bennett, and S. Stein, “Communication systems and techniques,” McGraw-Hill, New York, 1966.
[12]	M. K. Simon and M. S. Alouini, “A unified approach to the performance analysis of digital communication over generalized fading channel,” Proceedings of the IEEE, Vol. 86, pp. 1860-1877, September 1998.
[13]	I. S. Gradshteyn and I. M. Ryzhik. “Table of integrals, series, and products,” CA: Academic Press, San Diego, 5th Edition, 1994.
[14]	W. C. Jakes, “Microwave Mobile Communications,” IEEE Press, Piscataway, Jersey, 1974.
[15]	J. Zhou, S. Sasaki, S. Muramatsu, H. Kikuchi and Y. Onozato, “Saptial correlation for a circular antenna array and its applications in wireless communications,” IEEE Global Telcommunications Conference, Vol. 2, pp. 1108-1113, 2003.