High Altitude Platform Station (HAPS): A Review of New Infrastructure Development for Future Wireless Communications

Widiawan, Anggoro K.; Tafazolli, Rahim

doi:10.1007/s11277-006-9184-9

Cited by 78 publications

(41 citation statements)

References 8 publications

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“…The stratosphere is the layer of the atmosphere where the temperature starts to increase with altitude. Immediately after the tropopause, which has a constant temperature of about −60 °C, the stratosphere starts at an altitude of 7 km at the poles and 18 km at the Equator, extending to around 50 km (Widiawan and Tafazolli 2006).…”

Section: Introductionmentioning

confidence: 99%

High-Altitude Platforms - Present Situation and Technology Trends

d’Oliveira¹,

Melo²,

Devezas³

2016

J.Aerosp. Technol. Manag.

180

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High-altitude platforms (HAPs) are aircraft, usually unmanned airships or airplanes positioned above 20 km, in the stratosphere, in order to compose a telecommunications network or perform remote sensing. In the 1990 and 2000 decades, several projects were launched, but very few had continued. In 2014, 2 major Internet companies (Google and Facebook) announced investments in new HAP projects to provide Internet access in regions without communication infrastructure (terrestrial or satellite), bringing back attention to the development of HAP. This article aims to survey the history of HAPs, the current state-of-the-art (April 2016), technology trends and challenges. The main focus of this review will be on technologies directly related to the aerial platform, inserted in the aeronautical engineering field of knowledge, not detailing aspects of the telecommunications area.

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Section: Introductionmentioning

confidence: 99%

High-Altitude Platforms - Present Situation and Technology Trends

d’Oliveira¹,

Melo²,

Devezas³

2016

J.Aerosp. Technol. Manag.

180

View full text Add to dashboard Cite

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“…In particular, to cover the same area from HAP significant less transmit power is required than from terrestrial transceiver station. Researches conducted in SkyTower project shows that for high definition digital TV purpose, HAP transceiver with 1W output power is equivalent to terrestrial transceiver with 1kW output power [14].…”

Section: Servicesmentioning

confidence: 99%

High Altitude Platform — Future of Infrastructure

Malinowski¹,

Zieliński²

2010

International Journal of Electronics and Telecommunications

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High Altitude Platform — Future of Infrastructure High Altitude Platform (HAP) concept and idea is presented in the article. Characteristics, advantages and disadvantages of HAPs are described. There is also the comparison available between HAPs and existing telecommunication infrastructure (terrestrial and satellite). Selected examples of the possible limitation and technological restrictions of HAP based systems are presented in the article.

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“…S1.66A as -a station located on an object at an altitude of 20 to 50 km and at a specified, nominal, fixed point relative to the earth‖ and carrying communications payloads. The HAPs provide many attractive features and superior performance compared to the conventional terrestrial and satellite technology such as the line-of-sight communications, lower transmission power and reduced time delays [6][7][8][9][10][11][12][13][14][15][16]. The HAP makes it possible for establishing Wide-Area Wireless Sensor Network (WAWSN) where several hundreds of kilometers breadth can be covered by a single HAP.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Concentric Circular Antenna Arrays for High-Altitude Platforms Wireless Sensor Networks

Albagory¹,

Said²

2014

IJCNIS

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Abstract-Wireless Sensor Networks (WSN) has gained interest in many applications and it becomes important to improve its performance. Antennas and communication performance are most important issues of WSN. In this paper, an adaptive concentric circular array (CCA) is proposed to improve the link between the sink and sensor nodes. This technique is applied to the new HighAltitude Platform (HAP) Wireless Sensor Network (WSN). The proposed array technique is applied for two coverage scenarios; a wider coverage cell of 30 km radius and a smaller cell of 8 km radius. The feasibility of the link is discussed where it shows the possibility of communications between the HAP sink station and sensor nodes located on the ground. The proposed CCA array is optimized using a modified Dolph-Chebyshev feeding function. A comparison with conventional antenna models in literature shows that the link performance in terms of bit energy to noise power spectral density ratio can be improved by up to 11.37 dB for cells of 8 km radius and 16.8 dB in the case of 30 km radius cells that make the link at 2.4 GHz feasible and realizable compared to using conventional antenna techniques.Index Terms-High altitude platforms, wireless sensor network, directional antennas, concentric circular arrays.

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High Altitude Platform Station (HAPS): A Review of New Infrastructure Development for Future Wireless Communications

Cited by 78 publications

References 8 publications

High-Altitude Platforms - Present Situation and Technology Trends

High-Altitude Platforms - Present Situation and Technology Trends

High Altitude Platform — Future of Infrastructure

Optimizing Concentric Circular Antenna Arrays for High-Altitude Platforms Wireless Sensor Networks

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