2 GHz propagation and diversity evaluation for in-building communications up to 4 MHz using High Altitude Platforms (HAP)

F Tila, P R Shepherd, S R Pennock

Research output: Contribution to conferencePaper

  • 4 Citations

Abstract

This paper investigates in-building radio coverage at 2GHz from a High Altitude Platform (HAP). The HAP is located at a height of 20km above the earth. The propagation analysis is based on a novel two-dimensional ray-model. The model makes use of an array of virtual transmitters placed around the building. To improve radio reception, two branch switched and equal gain diversity combining are applied at the terminal. Propagation coverage grids are generated over a pair of multi-floor building structures. Results include the calculation of in-building penetration loss and the derivation of link margins for 90% and 99% indoor area coverage. Using this data, the required HAP transmit power is calculated as a function of diversity technique, area coverage and operating bandwidth. Assuming a 1km radius spot beam, a 3G compatible operating bandwidth of 4MHz and 90% in-building area coverage, the results indicate that space diversity at the terminal reduces the HAP transmit power from 2.15 Watts to 0.84 Watts.

Conference

Conference54th IEEE Vehicular Technology Conference
CountryUSA United States
CityAtlantic City, NJ
Period7/10/0111/10/01

Fingerprint

Bandwidth
Communication
Transmitters
Earth (planet)

Cite this

Tila, F., Shepherd, P. R., & Pennock, S. R. (2001). 2 GHz propagation and diversity evaluation for in-building communications up to 4 MHz using High Altitude Platforms (HAP). 121-125. Paper presented at 54th IEEE Vehicular Technology Conference, Atlantic City, NJ, USA United States.

2 GHz propagation and diversity evaluation for in-building communications up to 4 MHz using High Altitude Platforms (HAP). / Tila, F; Shepherd, P R; Pennock, S R.

2001. 121-125 Paper presented at 54th IEEE Vehicular Technology Conference, Atlantic City, NJ, USA United States.

Research output: Contribution to conferencePaper

Tila, F, Shepherd, PR & Pennock, SR 2001, '2 GHz propagation and diversity evaluation for in-building communications up to 4 MHz using High Altitude Platforms (HAP)' Paper presented at 54th IEEE Vehicular Technology Conference, Atlantic City, NJ, USA United States, 7/10/01 - 11/10/01, pp. 121-125.
Tila F, Shepherd PR, Pennock SR. 2 GHz propagation and diversity evaluation for in-building communications up to 4 MHz using High Altitude Platforms (HAP). 2001. Paper presented at 54th IEEE Vehicular Technology Conference, Atlantic City, NJ, USA United States.
Tila, F ; Shepherd, P R ; Pennock, S R. / 2 GHz propagation and diversity evaluation for in-building communications up to 4 MHz using High Altitude Platforms (HAP). Paper presented at 54th IEEE Vehicular Technology Conference, Atlantic City, NJ, USA United States.5 p.
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abstract = "This paper investigates in-building radio coverage at 2GHz from a High Altitude Platform (HAP). The HAP is located at a height of 20km above the earth. The propagation analysis is based on a novel two-dimensional ray-model. The model makes use of an array of virtual transmitters placed around the building. To improve radio reception, two branch switched and equal gain diversity combining are applied at the terminal. Propagation coverage grids are generated over a pair of multi-floor building structures. Results include the calculation of in-building penetration loss and the derivation of link margins for 90{\%} and 99{\%} indoor area coverage. Using this data, the required HAP transmit power is calculated as a function of diversity technique, area coverage and operating bandwidth. Assuming a 1km radius spot beam, a 3G compatible operating bandwidth of 4MHz and 90{\%} in-building area coverage, the results indicate that space diversity at the terminal reduces the HAP transmit power from 2.15 Watts to 0.84 Watts.",
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AB - This paper investigates in-building radio coverage at 2GHz from a High Altitude Platform (HAP). The HAP is located at a height of 20km above the earth. The propagation analysis is based on a novel two-dimensional ray-model. The model makes use of an array of virtual transmitters placed around the building. To improve radio reception, two branch switched and equal gain diversity combining are applied at the terminal. Propagation coverage grids are generated over a pair of multi-floor building structures. Results include the calculation of in-building penetration loss and the derivation of link margins for 90% and 99% indoor area coverage. Using this data, the required HAP transmit power is calculated as a function of diversity technique, area coverage and operating bandwidth. Assuming a 1km radius spot beam, a 3G compatible operating bandwidth of 4MHz and 90% in-building area coverage, the results indicate that space diversity at the terminal reduces the HAP transmit power from 2.15 Watts to 0.84 Watts.

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