A report on Point-to-point (telecommunications), Microwave transmission and Wireless network

A 1 Gbit/s point-to-point millimeter-wave link installed in the UAE
The atmospheric attenuation of microwaves in dry air with a precipitable water vapor level of 0.001 mm. The downward spikes in the graph corresponds to frequencies at which microwaves are absorbed more strongly, such as by oxygen molecules.
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A point-to-point wireless unit with a built-in antenna at Huntington Beach, California
A parabolic satellite antenna for Erdfunkstelle Raisting, based in Raisting, Bavaria, Germany
Computers are very often connected to networks using wireless links, e.g. WLANs
C-band horn-reflector antennas on the roof of a telephone switching center in Seattle, Washington, part of the U.S. AT&T Long Lines microwave relay network
Wireless LANs are often used for connecting to local resources and to the Internet
Dozens of microwave dishes on the Heinrich-Hertz-Turm in Hamburg, Germany
Example of frequency reuse factor or pattern 1/4
Communications tower on Frazier Mountain, Southern California with microwave relay dishes
In a hidden node problem Station A can communicate with Station B. Station C can also communicate with Station B. However, Stations A and C cannot communicate with each other, but their signals can interfere at B.
Danish military radio relay node
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Production truck used for remote broadcasts by television news has a microwave dish on a retractible telescoping mast to transmit live video back to the studio.
Understanding of SISO, SIMO, MISO and MIMO. Using multiple antennas and transmitting in different frequency channels can reduce fading, and can greatly increase the system capacity.
Antennas of 1931 experimental 1.7 GHz microwave relay link across the English Channel. The receiving antenna (background, right) was located behind the transmitting antenna to avoid interference.
US Army Signal Corps portable microwave relay station, 1945. Microwave relay systems were first developed in World War II for secure military communication.
Richtfunkstelle Berlin-Frohnau
Microwave spying

Other examples of point-to-point communications links are leased lines and microwave radio relay.

- Point-to-point (telecommunications)

In recent years, there has been an explosive increase in use of the microwave spectrum by new telecommunication technologies such as wireless networks, and direct-broadcast satellites which broadcast television and radio directly into consumers' homes.

- Microwave transmission

Microwaves are widely used for point-to-point communications because their small wavelength allows conveniently-sized antennas to direct them in narrow beams, which can be pointed directly at the receiving antenna.

- Microwave transmission

In modern computer networking, the term point-to-point telecommunications means a wireless data link between two fixed points.

- Point-to-point (telecommunications)

Fixed wireless technology implements point-to-point links between computers or networks at two distant locations, often using dedicated microwave or modulated laser light beams over line of sight paths.

- Wireless network

The wireless connections between access points are usually point to point microwave links using parabolic dishes on the 2.4 GHz and 5.8 GHz band, rather than omnidirectional antennas used with smaller networks.

- Wireless network
A 1 Gbit/s point-to-point millimeter-wave link installed in the UAE

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