A new means for providing wireless communication has been currently proposed. It is based on aerial vehicle known as High Altitude Platform or Stratospheric Platforms (SPF). The SPF will be operated at an altitude of 17-22 km above the ground. Therefore, the channel condition may be different compared with those of the conventional terrestrial or satellite wireless channel. In this paper, the channel propagation characteristic of such a system is firstly investigated by means of ray tracing algorithm. We emphasize our investigation in a typical urban environment, in which the mobile users mostly exist. We developed building block model for simulation based on building height distribution, which is obtained from measurement inside Tokyo. As a result, propagation loss model and Ricean channel parameter for the SPF channel is reported in different scenarios. By using this result we then estimate the required transmitted power of SPF to serve the mobile users in a several transmission rate that is used in IMT-2000 services. Finally, an evaluation of BER of IMT-2000 link is performed in order to estimate the system level performance. From this evaluation, the main contribution of this paper is to clearly show the critical limitations of both power requirement as well as system level performance of mobile communication IMT-2000 by using the concept of the SPF.


G.M. Djuknic, J. Freidenfelds, Y. Okunev, IEEE Commun. Mag. 35 (1997) 128.

Y. Hase, R. Miura, S. Ohmori, Proceeding of 48th IEEE VTC Spring 2 (1998) 1191.

S. Ohmori, Y. Yamao, N. Nakajima, IEEE Commun. Mag. 38 (2000) 134.

J. Thornton, D. Grace, C. Spillard, T. Konefal, T.C. Tozer, IEE Elec. and Commun. Eng. J. 13 (2001) 138.

R. Miura, M. Oodo, Journal of Commun. Research Lab. 48 (2001) 33.

R. Miura, M. Oodo, National Institute of Information and Communications Technology, http://www2.nict.go.jp/mt/b181/english/link-e.html

Stratospheric Platform Broadband Partners Project, http://www.capanina.org/




F. Dovis, R. Fantini, M. Mondin, P. Savi, IEEE Journal on Select. Areas in Commun. 20 (2002) 641.

S. Shimamoto, T. Mikoshiba, S. Takakusagi, M. Hayashi, H. Shiba, IEICE Trans. Commun. E81-B, (1998) 2343

Iskandar, S. Shimamoto, IEICE Trans. Commun. E89-B (2006) 937.

F. Tila, P.R. Shepherd, S.R. Pennock, Proceeding of 11th IEE Antennas and Propagation Conference 1 (2001) 203.

H.L. Bertoni, Radio Propagation for Modern Wireless Systems, Prentice-Hall PTR, New Jersey, 2000, Ch..3 & 5.

Andrew S. Glassner, An Introduction to Ray Tracing, Morgan Kaufmann Publishers Inc., San

Fransisco, 1989.

ITU-R Resolution 221, “Use of high altitude platform stations providing IMT-2000 in the bands 1,885-1,980 MHz, 2,010-2,025 MHz in Region 1 and 3 and 1,885-1,980 MHz and 2,110-2,160 MHz in Region 2,” 2000.

John G. Proakis, Digital Communications, 4th Ed.McGraw Hill, New York, 2000.

H. Holma, A. Toskala, W-CDMA for UMTS: Radio Access for Third Generation Communication, John Wiley and Sons, New York, 2000.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.