Broadband communications from a high-altitude platform: the European HeliNet programme

Thornton, J.; Grace, David; Spillard, C.; Konefal, T.; Tozer, T.C.

doi:10.1049/ecej:20010304

Cited by 125 publications

(79 citation statements)

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“…These platforms are located 17-20 km above the earth's surface and can provide variety of applications. The demand for SPs has increased as they have most advantages of the conventional systems such as terrestrial mobile radio and satellite systems while eliminating most of their problems as shown by many studies [1][2][3][4][5][6][7]. It is expected that SPs will play an important role in the future wireless communications beyond 3G systems [7].…”

Section: Introductionmentioning

confidence: 99%

Geometrical Correction for Cell Deployment in Stratospheric Cellular Systems

Aljahdali¹,

Nofal²,

Albagory³

2012

PIER C

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Abstract-In this paper, cellular communications from Stratospheric platforms (SPs) is studied, and the coverage footprint analysis and design is demonstrated. In the analysis, two coverage schemes are introduced; flat-earth and real-earth models and cell footprint are determined in each case. The flat-earth provides simple footprint equations describing the cell dimensions especially for the cells of higher elevation angles while more accurate coverage equations, which well determine the geometry of the cells of lower elevation angles, can be obtained from the real-earth scheme. The design of a cellular system using the proposed coverage models is then introduced through a procedure that determines the cells locations and dimensions on the ground according to the teletraffic information. The procedure takes into considerations the cell broadening when going outwardly from the central cell to the outer lower elevation cells and constructs a cellular layout that has the most proper cells overlap and uniform coverage edges, which helps the linking between different SPs coverage areas.

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Section: Introductionmentioning

confidence: 99%

Geometrical Correction for Cell Deployment in Stratospheric Cellular Systems

Aljahdali¹,

Nofal²,

Albagory³

2012

PIER C

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“…In recent year, another alternative has been attracting much the attention of providing wireless services. It is based on an unmanned or manned airship or aircraft that is called High Altitude Platform Station (HAPS) or known by different names as Stratospheric Platform (SPF) [1][2][3][4]. They will be located at stratosphere in the altitude of around 17-22 km above the ground.…”

Section: Introductionmentioning

confidence: 99%

On the Performance of Imt-2000 Communication Link Based on Stratospheric Platforms

Iskandar¹,

Shimamoto²

2010

MST

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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.

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“…However, owing to the amount of new infrastructures required, it will still be some time before 3G is ubiquitous, especially in developing countries. One possible cost effective solution for deployments in these areas is to use High Altitude Platforms (HAPs) (Collela et al, 2000;Djuknic et al, 1997;Grace et al, 2001;Miura & Oodo, 2002;Park et al, 2002;Steele, 1992;Thornton et al, 2001;) for delivering 3G (WCDMA) communications services over a wide coverage area (Dovis et al, 2002;Falletti & Sellone, 2005;Foo et al, 2000;Masumura & Nakagawa, 2002;Vazquez et al, 2002). HAPs are either airships or planes that will operate in the stratosphere, 17-22 km above the ground.…”

Section: Introductionmentioning

confidence: 99%