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A cell site, cell phone tower, cell base tower, or cellular base station is a cellular-enabled mobile device site where antennas and electronic communications equipment are placed (typically on a radio mast, tower, or other raised structure) to create a cell, or adjacent cells, in a cellular network.
Cell towers frequently use a directional signal to improve reception in higher-traffic areas. In the United States, the Federal Communications Commission (FCC) limits omnidirectional cell tower signals to 100 watts of power. If the tower has directional antennas, the FCC allows the cell operator to emit up to 500 watts of effective radiated ...
A macrocell or macrosite is a cell in a mobile phone network that provides radio coverage served by a high power cell site (tower, antenna or mast). Generally, macrocells provide coverage larger than microcell. The antennas for macrocells are mounted on ground-based masts, rooftops and other existing structures, at a height that provides a ...
The antenna supporting pole, with a standard height of up to 20 m, is made of aluminium and consists of three telescopic tubular elements. Installation is easy and fast and is carried out with manual winches. Another RDU is a mobile cell site with a self-mounting pole that can be towed by heavy goods vehicles for loads of up to 7500 kg.
A cellular repeater (also known as cell phone signal booster or cell phone signal amplifier) is a type of bi-directional amplifier used to improve cell phone reception. [citation needed] A cellular repeater system commonly consists of a donor antenna that receives and transmits signal from nearby cell towers, coaxial cables, a signal amplifier, and an indoor rebroadcast antenna.
If two or more wireless providers share a cell tower, the state/local agencies must process the applications within 90 days. The agencies must process applications within 150 days for new cell towers. [31] Public safety: According to WIA, 70 percent of calls to 9-1-1 are made from wireless devices like cell phones and smart phones. [32]
Directional antennas were used to divide cells into sectors. In 1989, Simon Swales at Bristol University in the United Kingdom proposed methods for increasing the number of simultaneous users on the same frequency. Receive signals can be distinguished based on differences in their direction-of-arrival at the cell site antenna array.
Cell antennas on an electricity pylon showing two antennas per sector. The use of multiple antennas at both transmit and receive results in a multiple-input multiple-output (MIMO) system. The use of diversity techniques at both ends of the link is termed space–time coding.
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