Atmosphere attenuations

This work investigates a system availability of high-altitude platform station (HAPS)-based free-space optical (FSO) system based on the observed cloud data from the European Center for Medium-Range Weather Forecast (ECMWF).

6p viannee 02-08-2023 7 4   Download

UAV (Unmanned Aerial Vehicle) has become an essential part of 6G. UAVs can make it easier to have a LOS (light-of-sight) connection and quicker to launch a network. However, backhaul connection and energy limitations are two main reasons that slow down UAV usage.

7p viannee 02-08-2023 10 4   Download

Wireless networks - Lecture 2: Introduction to Wireless communication. The main topics covered in this chapter include: wireless transmission; digital data analog signals; noises; atmospheric noise like thunderstorms; attenuation and other impairments;...

38p haoasakura 30-05-2022 16 3   Download

In this paper, we present results on the design of the channel code for High Altitude Platform (HAP) systems using Extrinsic Information Transfer (EXIT) chart tool. We first consider a channel model from CAPANINA project and indicate the factors that affect HAP communication such as free space loss, atmosphere attenuations and small-scale fading.

8p viengland2711 23-07-2019 29 0   Download

These efforts have attenuated the emissions engendered by growth, but 24-hour PM10 (particulate matter with aerodynamic diameter less than 10 m) concentrations exceeding several hundred µg/m3 are still measured at many monitoring sites. 1,2 A persistent haze blankets the city, especially during winter, and there is great concern among residents and visitors about the effects of suspended particles on health. Aerosols that contribute to this visibility degradation are usually a combination of primary and secondary particles.

10p doipassword 01-02-2013 33 4   Download