volume | PIER Journals

Abstract

Propagation of Radio Frequency (RF) waves in indoor corridors is very complex and diverse as the propagation effects in the indoor scenarios are those that change over fractions of wavelength. Therefore, understanding of RF propagation characteristics is vital for the design of air interface and estimation of propagation losses is very much needed especially for wireless networks such as randomly deplorable Wireless Sensor Communications. In this research work, short-range, near floor/ground RF propagation path loss measurements at low antenna heights of 2 cm and 50 cm from the floor were made in typical narrow and wide straight indoor corridors at 915/2400 MHz in a modern multi-storied building utilizing RF equipment. Comparisons between measured and simulated path loss values were made utilizing Matlab simulations of Ray-tracing technique, free space and ITU-R models. Mean path loss exponent values were deduced from the measured data. The research work reported in this paper is predominately geared towards characterizing radio link for Wireless Sensor Communications/Networks in typical indoor corridor environments.

1. Akyildiz, I. F. and M. C. Vuran, Wireless Sensor Networks, John Wiley and Sons Ltd, New Jersey, 2010.
doi:10.1002/9780470515181

2. Zheng, J. and A. Jamalipour, Wireless Sensor Networks --- A Networking Perspective, John Wiley and Sons Ltd, New Jersey, 2009.
doi:10.1109/CNSR.2010.53

3. Callaway, Jr., E. H., Wireless Sensor Networks: Architectures and Protocols, Auerbach Publications, Boca Raton, 2004.

4. Welch, T. B., J. R. Wood, R. W. McParlin, L. K. Schulze, T. P. Flaherty, S. G. Carlone Hanson, R. J. Cahill, and R. A. Foran, "Very near ground RF propagation measurements for wireless systems ," Proc. IEEE Vehicular Technology Conference, 2556-2558, Tokyo, 2000.

5. Sohrabi, K., B. Manriquez, and G. J. Pottie, "Near ground wideband channel measurements in 800-1000 MHz," Proc. IEEE 49th Vehicular Technology Conference, 571-574, Houston, 1999.

6. Foran, R. A., T. B. Welch, and M. J. Walker, "Very near ground radio frequency propagation measurements and analysis for military applications ," Proc. IEEE Military Communications Conference, 336-340, New Jersey, 1999.

7. Joshi, G. G., C. B. Dietrich, Jr., C. R. Anderson, W. G. Newhall, W. A. Davis, J. Isaacs, and G. Barnett, "Near-ground channel measurements over line-of-sight and forested paths," IEEE Proceedings Microwaves, Antennas and Propagation, 589-596, 2005.
doi:10.1049/ip-map:20050013 Google Scholar

8. Molina Garcia Pardo, J. M., A. Martinez Sala, M. V. Bueno Delgado, E. Egea Lopez, L. Juan Llacer, and J. García Haro, "Channel model at 868 MHz for wireless sensor networks in outdoor scenarios," Proc. International Workshop on Wireless AD-HOC Networks, 23-26, London, 2005.

9. Yarkoni, N. and N. Blaunstein, "Prediction of propagation characteristics in indoor radio communication environments," Progress In Electromagnetics Research, Vol. 59, 151-174, 2006.
doi:10.2528/PIER05090801 Google Scholar

10. Lee, W. C. Y., Wireless and Cellular Telecommunications, McGraw Hill, Columbus, 2005.

11. Rappaport, T. S., Wireless Communications: Principles and Practice, Prentice Hall PTR, New Jersey, 2002.

12. Parsons, J. D. and Mobile Radio Propagation Channel, , John Wiley and Sons Ltd, New Jersey, 2000.

13. Bertoni, H. L., Radio Propagation for Modern Wireless Systems, Prentice Hall PTR, New Jersey, 2000.

14. Rao, T. R., S. V. B. Rao, M. V. S. N. Prasad, S. Mangal, A. Iqbal, and D. R. Lakshmi, "Mobile radio propagation path loss studies at VHF/UHF bands in Southern India," IEEE Trans. Broadcasting, Vol. 46, No. 2, 158-164, 2000.
doi:10.1109/11.868932 Google Scholar

15. Rao, T. R., S. V. B. Rao, M. V. S. N. Prasad, and S. K. Sarkar, "Single Knife edge diffraction propagation studies over a hilly terrain," IEEE Trans. Broadcasting, Vol. 45, No. 1, 20-29, 1999.
doi:10.1109/11.754984 Google Scholar

16. Prasad, M. V. S. N. and I. Ahmed, "Comparison of some path loss prediction methods with VHF/UHF measurements," IEEE Trans. Broadcasting, Vol. 43, No. 4, 459-486, 1997.
doi:10.1109/11.664027 Google Scholar

17. Jakes, W. C., Microwave Mobile Communication, IEEE Press, New Jersey, 1994.

18. Collins, R. E. and F. J. Zucker, Antenna Theory --- Part 2, McGraw-Hill, Columbus, 1969.

19. Abiola, F. and F. Jeff, "Effects of natural propagation environments on wireless sensor network coverage area," Proc. 35th Southeastern Symposium on System Theory, 16-20, 2003.

20. Wyne, S., A. P. Singh, F. Tufvesson, and A. F. Molisch, "A statistical model for indoor o±ce wireless sensor channels," IEEE Trans. on Wireless Communications, Vol. 8, No. 8, 4154-4164, 2009.
doi:10.1109/TWC.2009.080723 Google Scholar

21. Willis, S. L. and C. J. Kikkert, "Radio propagation model for long-range AD HOC wireless sensor network," Proc. IEEE International Conference on Wireless Networks, Communications and Mobile Computing , 826-832, 2005.

22. Taha-Ahmed, B., J. L. Masa-Campos, and D. F. Campillo, "Propagation loss measurement due to miscellaneous phenomenon at 5.6 GHz band," Progress In Electromagnetics Research C, Vol. 32, 207-220, 2012. Google Scholar

23. Janek, J. and J. Evans, "Predicting ground effects of omni-directional antennas in wireless sensor networks ," Wireless Sensor Networks, Vol. 2, No. 12, 879-890, 2010.
doi:10.4236/wsn.2010.212106 Google Scholar

24. Seybold, J. S., Introduction to RF Propagation, John Wiley and Sons Ltd, New Jersey, 2005.

25. Tranter, W. H., et al. Wireless Personal Communications Channel Modelling and System Engineering, Kluwer Academic Publishers, Massachusetts, 2002.

26. ITU-R, Recommendation, P. 527-3, , Electrical characteristics of the surface of the earth, 1992.

27. Balanis, C. A., Antenna Theory, John Wiley and Sons Ltd, New Jersey, 2005.

28. Kraus, J. D., Antennas for All Applications, McGraw Hill, Columbus, 2006.

29. ITU-R, Recommendation, P. 1238-7, , Propagation data and prediction methods for the planning of indoor radio communication systems and radio local area networks in the frequency range 900MHz to 100 GHz, 2012.

30. Qaraqe, Q. A., et al. "Statistical wireless channel propagation characteristics in underground mines at 900 MHz: A comparative analysis with indoor channels ," Ad Hoc Networks, 2011, doi:10.1016/j.adhoc.2011.01.015. Google Scholar

31. Pahlavan, K. and R. Ganesh, "Statistical characterization of a partitioned indoor radio channel," Proc. IEEE International Conference on Communications, Vol. 3, 1252-1256, Chicago, 1992.

32. Alexander, S. E., "Radio propagation within buildings at 900 MHz," Electronics Letters, Vol. 18, No. 21, 913-914, 1982.
doi:10.1049/el:19820622 Google Scholar

33. Aleksandar, N., N. Natasa, and P. George, "Modern approaches in modeling of mobile radio systems propagation environment," IEEE Communication Surveys and Tutorials, Vol. 3, No. 3, 2-12, 2000. Google Scholar

Professor Thipparaju Rama Rao

Dr. Balachander Dhanavanthan