{"title":"Study on Radio Link Availability in Millimeter Wave Range","authors":"Boncho G. Bonev, Kliment N. Angelov, Emil S. Altimirski","volume":59,"journal":"International Journal of Electronics and Communication Engineering","pagesStart":1458,"pagesEnd":1462,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/12827","abstract":"In this paper, the link quality in SHF and EHF ranges\r\nare studied. In order to achieve high data rate higher frequencies must\r\nbe used \u2013 centimeter waves (SHF), millimeter waves (EHF) or optical\r\nrange. However, there are significant problem when a radio link work\r\nin that diapason \u2013 rain attenuation and attenuation in earth-s\r\natmosphere. Based on statistical rain rates data for Bulgaria, the link\r\navailability can be determined, depending on the working frequency,\r\nthe path length and the Power Budget of the link. For the calculations\r\nof rain attenuation and atmosphere-s attenuation the ITU\r\nrecommendations are used.","references":"[1] A. Kato, K. Sato, M. Fujise, and S. Kawakami, \"Propagation\r\ncharacteristics of 60-GHz millimeter waves for ITS intervehicle\r\ncommunications,\" IEICE Transactions on Communications, vol. E84-B,\r\nno. 9, pp. 2530-2539, 2001.\r\n[2] V. Kvicera, M. Grabner, and O. Fiser, Results of 2-year concurrent\r\nmeasurements of attenuation at 58 GHz and rain intensities, Proc. of\r\nthe 11th Microcoll Conference, pp. 77-80, Budapest, Hungary, Sept.\r\n2003.\r\n[3] V. Kvicera and M. Grabner, Results of long-term concurrent\r\nmeasurement of rain rate and rain attenuation at 38 GHz, Proceedings\r\nof 2002 URSI General Assembly, Maastricht, Netherlands, 17-24 August\r\n2002.\r\n[4] Kim, E. Korevaar, Availability of free-space optics (FSO) and hybrid\r\nFSO\/RF systems, SPIE Vol. 4530, p. 84-95, Optical Wireless\r\nCommunications IV, Eric J. Korevaar; Ed., November 2001.\r\n[5] J. Seybold, Introduction to RF propagation, John Wiley & Sons Inc.,\r\nHoboken, New Jersey, 2005.\r\n[6] R. L. Freeman, Radio System Design for Telecommunications, John\r\nWiley & Sons Inc., Hoboken, New Jersey, 2007.\r\n[7] Rec. ITU-R P.838-3, Specific attenuation model for rain for use in\r\nprediction methods.\r\n[8] Rec. ITU-R P.676-6, Approximate estimation of gaseous attenuation in\r\nthe frequency range 1 - 350 GHz.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 59, 2011"}