Statistics of monthly and diurnal variations in the occurrence of rain fades are needed to give a detailed insight for system design of these services. This paper analyses the performance on three years of rain rate and rain attenuation measurement to study the empirical determination of power law coefficients calculated for monthly distribution of rain attenuation from the knowledge of rain rate at 19.8 GHz link for COMS1 in South Korea. The received signal data for rain attenuation and rain rate were collected at 10 second intervals over a three year period from 2013 to 2015. The comparison of measured data for monthly variation illustrates the suitability for the estimation of signal in Ka-band whose appropriateness is verified through the comparison with prominent rain attenuation models namely ITU-R P. 618-13 and empirically generated regression coefficients values for ITU-R P. 838-3. A monthly variation of the coefficients has been indicated, and the empirical measured data were compared with the ITU-R P. 838-3 derived regression coefficients. Moreover, the statistics analyzed to 6 hour contiguous periods of the day are also shown. Furthermore, the paper presents an overview of the redicted monthly variation of rain attenuation estimation of 2013 year for Ka band in 19.8 and 20.73 GHz from 12.25 GHz link which are obtained from the ITU-R P. 618-13 frequency scaling method, and these predictions are compared with experimentally measured values. These statistics can be useful for communication systems whose service quality and design require seasonal and diurnal variation.
2. Ojo, J. S. and O. C. Rotimi, "Diurnal and seasonal variations of rain rate and rain attenuation on Ku-band satellite systems in a tropical region: A synthetic storm techniques approach," Journal of Computer and Communications, Vol. 3, No. 4, 1, 2015.
3. Allnutt, J. E. and F. Haidara, "Ku-band diurnal fade characteristics and fade event duration data from three, two-year, Earth-space radiometric experiments in Equatorial Africa," International Journal of Satellite Communications, Vol. 18, No. 3, 161-183, 2000.
4. Elbert, B. R., Introduction to Satellite Communication, Artech House, 2008.
5. Konefal, T., et al., "Prediction of monthly and annual availabilities on 10–50 GHz satelliteEarth and aircraft-to-aircraft links," IEE Proceedings — Microwaves, Antennas and Propagation, Vol. 147, No. 2, 122-127, 2000.
6. Matricciani, E., "Diurnal distribution of rain attenuation in communication and broadcasting satellite systems at 11.6 GHz in Italy," IEEE Transactions on Broadcasting, Vol. 44, No. 2, 250-258, 1998.
7. Riva, C., "Seasonal and diurnal variations of total attenuation measured with the ITALSAT satellite at Spino d’Adda at 18.7, 39.6 and 49.5 GHz," International Journal of Satellite Communications and Networking, Vol. 22, No. 4, 449-476, 2004.
8. Das, S., A. Maitra, and A. K. Shukla, "Diurnal variation of slant path Ka-band rain attenuation at four tropical locations in India," Indian Journal of Radio and Space Physics, Vol. 42, No. 1, 34-41, 2013.
9. Ippolito, Jr., L. J., "Satellite Communications Systems Engineering: Atmospheric Effects, Satellite Link Design and System Performance," John Wiley & Sons, Vol. 6, 2008.
10. Timothy, P., W. C. Bostian, and J. E. Allnutt, Satellite Communication, 2nd Ed., John Wiley & Sons, 2003.
11. Ojo, J. S., M. O. Ajewole, and S. K. Sarkar, "Rain rate and rain attenuation prediction for satellite communication in Ku and Ka bands over Nigeria," Progress In Electromagnetics Research B, Vol. 5, 207-223, 2008.
12. Singh, M. and J. E. Allnutt, "Rain attenuation predictions at Ku-band in South East Asia countries," Progress In Electromagnetics Research, Vol. 76, 65-74, 2007.
13. ITU-R P. 618-13, Propagation data and prediction methods required for the design of Earth-space telecommunication systems, Geneva, Switzerland, 2017.
14. Sujan, S., J.-J. Park, and D.-Y. Choi, "Rain rate modeling of 1-min from various integration times in South Korea," Springer Plus, Vol. 5, No. 1, 2016.
15. Shrestha, S., J.-J. Park, S. W. Kim, J. J. Kim, J. H. Jung, and D. Y. Choi, "1-minute rain rate derivation from various integration times in South Korea," Korean Institute of Next Generation Computing, Bangkok, Thailand, Jan. 2016.
16. Choi, D. Y., "Rain attenuation prediction model by using the 1-hour rain rate without 1-minute rain rate conversion," Int. J. of Comput. Sci. Netw. Secur., Vol. 6, 130-133, 2006.
17. Choi, D. Y., et al., "Comparison of measured rain attenuation in the 12.25 GHz band with predictions by the ITU-R model," International Journal of Antennas and Propagation, Vol. 2012, 2011.
18. Shrestha, S. and D.-Y. Choi, "Study of rain attenuation in Ka band for satellite communication in South Korea," Journal of Atmospheric and Solar-Terrestrial Physics, 2016.
19. ITU-R, Specific attenuation model for rain for use in prediction methods, Recommendation P.838-3, ITU-R Recommendations, P Series, ITU, International Telecommunications Union, Geneva, 2005.
20. Zhao, Z.-W., M.-G. Zhang, and Z.-S. Wu, "Analytic specific attenuation model for rain for use in prediction methods," International Journal of Infrared and Millimeter Waves, Vol. 22, No. 1, 113-120, 2001.
21. ITU-R, Rain height model for prediction methods, Recommendation P.839-4, ITU-R Recommendations, P Series, International Telecommunications Union, Geneva, 2013.
22. Stutzman, W. L. and K. M. Yon, "A simple rain attenuation model for Earth-space radio links operating at 10–35 GHz," Radio Sci., Vol. 21, No. 1, 65-75, 1986.
23. National Radio Research Agency (RRA) 767, , Bitgaram-ro, Naju-si, Jeollanam-do 58217, Republic of Korea, http://www.rra.go.kr/en/index.jsp.
24., www.mathworks.com, the mathworks, Inc. Protected by U.S. and international patents.
25. ITU-R P. 311-15 Acquisition, presentation and analysis of data in studies of radiowave propagation, International Telecommunication Union, Geneva, 2013.
26. Downie, N. M. N. M. and R. W. Heath, Basic Statistical Methods, No. 4, HA29, D6, 1983.
27. Shrestha, S. and D.-Y. Choi, "Rain attenuation statistics over millimeter wave bands in South Korea," Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 152–153, 2017.
28. Shrestha, S. and D.-Y. Choi, "Proposed one-minute rain rate conversion method for microwave applications in South Korea," Journal of Information and Communication Convergence Engineering, Vol. 14, No. 3, Aug. 2016, doi:10.6109/jicce.2016.14.3.153.
29. Shrestha, S. and D.-Y. Choi, "Characterization of rain specific attenuation and frequency scaling method for satellite communication in South Korea," International Journal of Antennas and Propagation, Vol. 2017, 2017.
30. Shrestha, S. and D.-Y. Choi, "Study of 1-min rain rate integration statistic in South Korea," Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 155, 1-11, 2017.
31. Garcia-Rubia, J. M., et al., "Experimental assessment of slant-path rain attenuation variability in the Ka-band," International Journal of Satellite Communications and Networking, Vol. 34, No. 2, 155-170, 2016.
32. Allnutt, J. E. and F. Haidara, "Ku-band diurnal fade characteristics and fade event duration data from three, two-year, Earth-space radiometric experiments in Equatorial Africa," International Journal of Satellite Communications and Networking, Vol. 18, No. 3, 161-183, 2000.
33. Fiebig, U.-C. and C. Riva, "Impact of seasonal and diurnal variations on satellite system design in V band," IEEE Transactions on Antennas and Propagation, Vol. 52, No. 4, 923-932, 2004.
34. Boulanger, X., et al., "Four years of total attenuation statistics of earth-space propagation experiments at Ka-band in Toulouse," IEEE Transactions on Antennas and Propagation, Vol. 63, No. 5, 2203-2214, 2015.
35. Series, ITU Radiowave Propagation Characteristics of precipitation for propagation modelling, Recommendation ITU-R, 837-7, 2017.