Skip to main content

Advertisement

SpringerLink
Log in

Novel Directional Radiation Pattern by Genetic Algorithms in Indoor Wireless Local Loop

  • Published:
Wireless Personal Communications Aims and scope Submit manuscript

Abstract

The genetic algorithm is used to synthesize the radiation pattern of the directional circular arc array to minimize the bit error rate (BER) performance in indoor wireless communication system. The impulse responses of the indoor channel for any transmitter-receiver location are computed by shooting and bouncing ray/image techniques. By using the impulse response of multipath channel, the performance of the synthesized antenna pattern on BPSK (binary phase shift keying) system with phase and timing recovery circuits can be calculated. Based on the topography of the antenna and the BER formula, the synthesis problem can be reformulated into an optimization problem and solved by the genetic algorithm. The novelty of our approach is choosing BER as the object function instead of sidelobe level of the antenna pattern, i.e., BER performance is defined as a object function to optimize the excitation coefficient of array by the genetic algorithm. 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. Besides, the genetic algorithm will converge to global extreme instead of local extreme and achieves a good antenna pattern. Numerical results show that the synthesized antenna pattern is effective to combat the multipath fading and can increase the transmission rate of indoor millimeter wave system.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Manabe T., Miura Y., Ihara T., (1996). “Effects of Antenna Directivity and Polarization on Indoor Multipath Propagation Characteristics at 60 GHz”. IEEE Journal of Selected Areas Commununication 14, 441–448

    Article  Google Scholar 

  2. Hammoudeh A.M., Allen G., (1995). “Millimetric Wavelengths Radiowave Propagation for Line-of-Sight Indoor Microcellular Mobile Communications”. IEEE Transactions on Vehicular Technology 44, 449–460

    Article  Google Scholar 

  3. Bultitude R.J.C., Hahn R.F., Davies R.J., (1998). “Propagation Considerations for the Design of an Indoor Broad-band Communications System at EHF”. IEEE Transactions on Vehicular Technology 47, 235–245

    Article  Google Scholar 

  4. Yang G., Pahlavan K., Holt T.J., (1994). “Sector Antenna and DFE Modems for High Speed Indoor Radio Communication”. IEEE Transactions on Vehicular Technology, 43, 925–933

    Article  Google Scholar 

  5. M.R. Williamson, G.E. Athansasiadon, and A.R. Nix, “Investigating the Effects of Antenna Directivity on Wireless Indoor Communication at 60 GHz,” PIMRC 1997., The 8th IEEE International Symposium Vol. 2, pp. 635–639, 1997.

  6. Goldgerg D.E., (1989). Genetic Algorithm in Search, Optimization and Machine Learning. Reading MA, Addision-Wesley

    Google Scholar 

  7. Rahmat-Samii Y., Michielsen E., (1999). Elextromagnetic Optimization by Genetic Algorithms. New York, Wiley

    Google Scholar 

  8. Ares F.J., Rodriguez A., Villanueva E., Rengarajan S.R., (1999). “Genetic Algorithms in the Design and Optimization of Antenna Array Patterns”. IEEE Transactions on Antennas and Propagatation 47, 506–510

    Article  Google Scholar 

  9. Chuang J.C., (1987). “The Effects of Multipath Delay Spread on Timing Recovery”. IEEE Transactions on Vehicular Technology 35, 135–140

    Article  Google Scholar 

  10. Greenstein L.J., Czekaj-Augmn B.A., (1982). “Performance Comparisons Among Digital Radio Technologies Subjected to Multipath Fading”. IEEE Transactions on Commununications 30, 1184–1197

    Article  Google Scholar 

  11. Pahlavan K., (1985). “Comparison Between the Performance of QPSK, SQPSK, QPR, and SQPR Systems Over Microwave LOS Channels”. IEEE Transactions on Commununications 33, 291–296

    Article  Google Scholar 

  12. Ares F., Rengarajan S.R., Lence J.A.F., Trastoy A., Moreno E., (1996). “Synthesis of Antenna Patterns of Circular Arc Arrays”. Electronics Letters 32, 1845–1846

    Article  Google Scholar 

  13. Jiao Y.C., Wei W.Y., Huang L.W., Wu H.S., (1993). “A New Low-Side-Lobe Pattern Synthesis Technique for Conformal Arrays”. IEEE Transactions on Antenna Propagation 41, 824–831

    Article  Google Scholar 

  14. Chen S.H., Jeng S.K., (1997). “An SBR/Image Approach for Radio Wave Propagation in Indoor Environments with Metallic Furniture”. IEEE Transactions on Antennas and Propagation 45, 98–106

    Article  Google Scholar 

  15. K. Sato, T. Manabe, T. Ihara, H. Saito, S. Ito, T. Tanaka, K. Sugai, N. Ohmi, Y. Murakami, M. Shibayama, Y. Konishi, and T. Kimura, “Measurements of Reflection and Transmission Characteristics of Interior Structure of Office Building in the 60 GHz band,” Proceedings IEEE International Symposium on Personal, Indoor and Mobile Radio Communication, Vol. 1, pp. 14–18, 1996.

Download references

Author information

Authors and Affiliations

  1. Department of Electrical Engineering, Tamkang University, Tamsui, Taiwan, R.O.C

    Chien-Hung Chen, Chien-Ching Chiu & Chun-Liang Liu

Authors
  1. Chien-Hung Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Chien-Ching Chiu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Chun-Liang Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Chien-Hung Chen.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Chen, CH., Chiu, CC. & Liu, CL. Novel Directional Radiation Pattern by Genetic Algorithms in Indoor Wireless Local Loop. Wireless Pers Commun 42, 575–586 (2007). https://doi.org/10.1007/s11277-006-9212-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11277-006-9212-9

Keywords

Search

Navigation