PIER C
 
Progress In Electromagnetics Research C
ISSN: 1937-8718
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BIT ERROR RATE REDUCTION FOR MULTIUSERS BY SMART UWB ANTENNA ARRAY

By S.-H. Liao, M.-H. Ho, and C.-C. Chiu

Full Article PDF (331 KB)

Abstract:
In this paper, a new ultra wideband circular antenna array (UCAA) combining genetic algorithm (GA) to minimize the bit error rate (BER) is proposed. The ultra wideband (UWB) impulse responses of the indoor channel for any transmitter-receiver location are computed by SBR/Image techniques, inverse fast Fourier transform and Hermitian processing. By using the impulse response of multipath channel, the BER performance of the binary pulse amplitude modulation (B-PAM) impulse radio (IR) UWB system with circular antenna array can be calculated. Based on the topography of the antenna and the BER formula, the array pattern synthesis problem can be reformulated into an optimization problem and solved by the genetic algorithm. The novelties of our approach is not only choosing BER as the object function instead of sidelobe level of the antenna pattern, but also considering the antenna feed length effect of each array element. The strong point of the genetic algorithm is that it can find out the solution even if the performance index cannot be formulated by simple equations. Simulation results show that the synthesized antenna array pattern is effective to focus maximum gain to the multiusers.

Citation:
S.-H. Liao, M.-H. Ho, and C.-C. Chiu, "Bit Error Rate Reduction for Multiusers by Smart UWB Antenna Array," Progress In Electromagnetics Research C, Vol. 16, 85-98, 2010.
doi:10.2528/PIERC10070712

References:
1. Federal Communications Commission, "Revision of Part 15 of the commission's rules regarding ultra-wideband transmission system, first report and order," FCC, ET Docket, 1-118, Feb. 14, 2002.

2. Colak, S., T. F.Wong, and A. H. Serbest, "UWB dipole array with equally spaced elements of different lengths," IEEE International Conference on Ultra-wideband, 789-793, 2007.

3. Malik, W. Q., D. J. Edwards, and C. J. Stevens, "Angular-spectral antenna effects in ultra-wideband communications links," IEE Proc. --- Commun., Vol. 153, No. 1, Feb. 2006.

4. Funk, E. E. and C. H. Lee, "Free-space power combining and beam steering of ultra-wideband radiation using an array of laser-triggered antennas," IEEE Trans. Microwave Theory Tech., Vol. 44, 2039-2044, Nov. 1996.

5. Yazdandoost, K. Y. and R. Kohno, "Free-space power combining and beam steering of ultra-wideband radiation using an array of laser-triggered antennas," IEEE Communication Magazine, Vol. 42, No. 6, 29-32, 2004.

6. Ghavami, M., "Wideband smart antenna theory using rectangular array structures," IEEE Trans. Signal Processing, Vol. 50, No. 9, 2143-2151, Sep. 2002.

7. Tarokh, V., N. Seshadri, and A. R. Calderbank, "Space-time codes for high data rate wireless communications: Performance criterion and code construction," IEEE Trans. Inform. Theory, Vol. 44, 744-745, Mar. 1998.

8. Chen, C. H., C. C. Chiu, and C. L. Liu, "Novel directional radiation pattern by genetic algorithms in indoor wireless local loop," Wireless Personal Communications, Vol. 42, No. 4, 575-586, Sep. 2007.

9. Ho, M.-H., S.-H. Liao, and C.-C. Chiu, "A novel smart UWB antenna array design by PSO," Progress In Electromagnetic Research C, Vol. 15, 103-115, 2010.

10. Ares, F. J., A. Rodriguez, E. Villanueva, and S. R. Rengarajan, "Genetic algorithms in the design and optimization of antenna array patterns," IEEE Trans. Antennas and Propagat., Vol. 47, 506-510, Mar. 1999.

11. Guo, J. L. and J. Y. Li, "Pattern synthesis of conformal array antenna in the presence of platform using differential evolution algorithm," IEEE Trans. Antennas and Propagation, Vol. 57, No. 9, 2615-2621, Sep. 2009.

12. Gueguen, E., F. Thudor, and P. Chambelin, "A low cost UWB printed dipole antenna with high performance," IEEE International Conference on Ultra-wideband, 89-92, Sep. 2005.

13. Talom, F. T., B. Uguen, L. Rudant, J. Keignart, J.-F. Pintos, and P. Chambelin, "Evaluation and characterization of an UWB antenna in time and frequency domains," IEEE International Conference on Ultra-wideband, 669-673, Sep. 2006.

14. Li, Z. X. and Y. Q. Jin, "Numerical simulation of bistatic scattering from fractal rough surface in the finite element method," Science in China (Series E), Vol. 44, 12-18, 2001.

15. Manteuffel, D., "Radio link characterization using real antenna integration scenarios for UWB consumer electronic applications," Ultra Wideband Systems, Technologies and Applications, 123-130, The Institution of Engineering and Technology Seminar, Apr. 2006.

16. El-Hadidy, M. and T. Kaiser, "Impact of ultra wide-band antennas on communications in a spatial cannel," 1st International Cognitive Radio Oriented Wireless Networks and Communications, 2006, 1-5, Jun. 2006.

17. Malik, W. Q., D. J. Edwards, Y. Zhang, and A. K. Brown, "Three-dimensional equalization of ultrawideband antenna distortion," Proc. Int. Conf. Electromagn. Adv. Apps. (ICEAA), Torino, Italy, Sep. 2007.

18. Yao, R., Z. Chen, and Z. Guo, "An efficient multipath channel model for UWB home networking," 2004 IEEE Radio and Wireless Conference, 511-516, Sep. 2004.

19. Oppermann, I., M. Hamalainen, and J. Iinatti, UWB Theory and Applications, John Wiley & Sons, 2004.

20. Liu, C. L., C. C. Chiu, S. H. Liao, and Y. S. Chen, "Impact of metallic furniture on UWB channel statistical characteristics," Tamkang Journal of Science and Engineering, Vol. 12, No. 3, 271-278, Sep. 2009.

21. Goldberg, D. E., Genetic Algorithm in Search, Optimization and Machine Learning, Addison Wesley, 1989.

22. Michael Johnson, J. and Y. Rahmat-Samii, "Genetic algorithms in engineering electromagnetics," IEEE Antennas and Propagation Magazine, Vol. 39, No. 4, 7-21, Aug. 1997.


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