volume | PIER Journals

Abstract

The radio waves propagating through the earth atmosphere will be attenuated due to the presence of atmosphere particles, such as water vapor, water drops and the ice particles. Meanwhile, the atmospheric gases and rain will both absorb and scatter the radio waves, and consequently degrade the performance of the link. The results of various studies conducted in temperate and tropical regions have been published in research papers. This paper presents the summary of comparative studies on different rain attenuation prediction methods for terrestrial microwave links tropical regions. Basically the models described in this paper include those of the ITU-R, revised Moupfouma, revised Silva Mello and Lin model. The objective of this study is to reveal the most suitable rain attenuation prediction model for the Malaysian tropical region. This paper will provide useful information for microwave engineers and researchers in making decision over the choice of most suitable rain attenuation prediction for terrestrial links operating in a tropical region. Even though the ITU-R model underestimates the rain attenuation at higher frequencies, the test results have clearly indicated that it is most suitable for predicting terrestrial rain attenuation in tropical Malaysia, compared to others.

1. Crane, R. K., "Prediction of attenuation by rain," IEEE Transactions on Communication, Vol. 28, No. 9, September 1980.
doi:10.1109/TCOM.1980.1094844 Google Scholar

2. Panagopoulos, D., P. D. M. Arapoglou, and P. G. Cottis, "Satellite communications at Ku, Ka and V bands: Propagation impairments and mitigation techniques," IEEE Communications Surveys and Tutorials, Vol. 6, No. 3, 2-14, 2004.
doi:10.1109/COMST.2004.5342290 Google Scholar

3. Kanellopoulos, J. D., S. G. Kouleoulas, N. J. Kolliopoulos, C. N. Capsalis, and S G. Ventouras, "Rain attenuation problems affecting the performance of microwave communication systems," Ann Telecommunication, Vol. 45, No. 7-8, 1990. Google Scholar

4. Sakarellos, V. K., D. Skraparlis, A. D. Panagopoulos, and J. D. Kanellopoulos, "Outage performance analysis of a dual-hop radio delay system operating at frequencies above 10 GHz," IEEE Transactions on Communications, Vol. 58, No. 11, November 2010. Google Scholar

5. Panagopoulos, A. D. and J. D. Kanellopoulos, "Adjacent satellite interference e®ects as applied to the outage performance of an earth-space system located in a heavy rain climatic region," Annals of Telecommunications, No. 9-10, 925-942, 2002. Google Scholar

6. Skraparlis, D., V. K. Sakarellos, A. D. Panagopoulos, and J. D. Kanellopoulos, "Satellite and terrestrial diversity reception performance in tropical regions," International Workshop on Satellite and Space Communications, IWSSC 2009, 403-406, Siena, Italy, September 9-11, 2009. Google Scholar

7. Morita, K. and I. Higutti, "Prediction methods of rain attenuation distributions of micro and millimeter waves," Rev. of ECL, Vol. 24, No. 7-8, 651-668, 1976. Google Scholar

8. Crane, R. K., Propagation Handbook for Wireless Communication System Design, CRC Press LLC, 2003.
doi:10.1201/9780203506776

9. Sakarellos, V. K., D. Skraparlis, A. D. Panagopoulos, and J. D. Kanellopoulos, "Optimum placement of radio relays in Optimum placement of radio relays in millimeter wave wireless dual-hop networks," IEEE Antennas & Propagation Magazine, Wireless Corner, Vol. 51, No. 2, 190-199, April 20.
doi:10.1109/MAP.2009.5162063 Google Scholar

10. Mandeep, J. S. and K. Tanaka, "Effects of atmospheric parameters on satellite link," Int. J. Infrared Milli. Waves, Vol. 28, 789-795, 2007.
doi:10.1007/s10762-007-9269-x Google Scholar

11. Singh, M. S. J., S. I. S. Hassan, M. F. Ain, K. Igarashi, K. Tanaka, and M. Iida, "Rain attenuation model for south east Asia countries," IET Electronic Letters, Vol. 43, No. 2, 75-77, 2007.
doi:10.1049/el:20072677 Google Scholar

12. Ramachandran, V. and V. Kumar, "Invariance of accumulation time factor of Ku-band signals in the tropics," Journal of Electromagnetic Waves and Applications, Vol. 19, No. 11, 1501-1509, 2005.
doi:10.1163/156939305775701868 Google Scholar

13. Crane, R. K., Electromagnetic Wave Propagation through Rain, Chapters 1{4, A Wiley-Inter Science Publication, New York, 1996.

14. Recommendation ITU-R P.530-13 (10/2009) "Propagation data and prediction methods required for the design of terrestrial line of sight systems,", October 2009. Google Scholar

15. Singh, M. S. J., S. I. S. Hassan, M. F. Ain, K. Igarashi, K. Tanaka, and M. Iida, "Proposed rain attenuation model revised from ITU used for prediction in tropical climate," Research Journal of Applied Sciences, Vol. 2, No. 1, 81-88, 2007. Google Scholar

16. Moupfouma, F., "Electromagnetic waves attenuation due to rain: A prediction model for terrestrial or L.O.S SHF and EHF radio communication," J. Infrared Milli Terahz Waves, Vol. 30, 622-632, 2009.
doi:10.1007/s10762-009-9481-y Google Scholar

17. Silva Mello, L. A. R., M. S. Pontes, R. S. L. Souza, and N. A. Garcia, "Prediction of rain attenuation in terrestrial link Prediction of rain attenuation in terrestrial link," Electron Lett., Vol. 43, No. 25, 1442-1443, 2007.
doi:10.1049/el:20072410 Google Scholar

18. Lin, S. H., "National long term rain statistics and empirical calculation of 11 GHz microwave rain attenuationcalculation of 11 GHz microwave rain attenuation," The Bell System Technical Journal, Vol. 56, No. 9, 1581-1581, 1977. Google Scholar

19. "Acquisition, presentation and analysis of data in studies of troposphere propagation,", Recommendation ITU-R P.311-13, ITU-R P Series, October 2009. Google Scholar

Mr. Kesavan Ulaganathen

Professor Tharek Bin Abdul Rahman

Dr. Amuda Yusuf Abdulrahman

Dr. Sharul Kamal Bin Abd Rahim