High-altitude platforms (HAPs) are one of the most promising alternative infrastructures for
realizing next-generation high-data-rate wireless networks. This paper investigates the …

The increased demand for broadband communications has led to the rapid development of
conventional terrestrial and satellite wireless communications systems. One of the main …

High-altitude platforms are one of the most promising alternative infrastructures for realizing
next generation high data rate wireless networks. This paper presents a three-dimensional …

With the advent of mobile technologies, communication is no longer a stationary element. In
addition, with gradual sophistication of the technologies, the need for communication is no …

Fourth generation (4G) mobile access is drawing particular attention as it promises to deliver
high data rates and reliable coverage for broadband wireless access. In this paper …

In this paper, the performance of HAPs (High Altitude Platforms) UMTS HSDPA (High Speed
Downlink Packet Access) is studied for different scenarios and two directions (0° and 30°) …

The drift change in weather and wars among countries changing the map of world rapidly
and their result are too much dangerous. Aftermath the mass destruction of natural disaster …

Desde hace años, todas las tecnologías de telecomunicaciones, siguen una tendencia
hacia la integración de toda clase de servicios, mediante una red global de …

There is an insatiable demand for communications services throughout the world, driven
largely by the need for Internet ac-cess. Wireless offers the only viable provision means in …

Free-space optical (FSO) links are competitive wireless links offering high data rate, security
and low system complexity. Compared to radio-frequency (RF) links, FSO links offer high …