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2. Okumura model - Wikipedia

   en.wikipedia.org/wiki/Okumura_Model

   Okumura developed a set of curves giving the median attenuation relative to free space (A mu), in an urban area over a quasi-smooth terrain with a base station effective antenna height (hte) of 200 m and a mobile antenna height (hre) of 3 m. These curves were developed from extensive measurements using vertical omni-directional antennas at both ...

3. ITU model for indoor attenuation - Wikipedia

   en.wikipedia.org/wiki/ITU_Model_for_Indoor...

   The ITU indoor propagation model, also known as ITU model for indoor attenuation, is a radio propagation model that estimates the path loss inside a room or a closed area inside a building delimited by walls of any form. Suitable for appliances designed for indoor use, this model approximates the total path loss an indoor link may experience.

4. Small cell - Wikipedia

   en.wikipedia.org/wiki/Small_cell

   The transmitting signal from Macro Base Station (MBS) weakens quickly once the MBS signal reaches indoors. Femtocells provide a solution to the difficulties present in macrocell-based system. Thus, Femto Base Station (FBS) network coverage is one of the prime concerns in indoor environment to get good quality of service (QoS).

5. Cell site - Wikipedia

   en.wikipedia.org/wiki/Cell_site

   Cellular lattice tower A cell tower in Peristeri, Greece. 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.

6. WSPR (amateur radio software) - Wikipedia

   en.wikipedia.org/wiki/WSPR_(amateur_radio_software)

   The program is designed for sending and receiving low-power transmissions to test propagation paths on the MF and HF bands. WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Transmissions carry a station's callsign, Maidenhead grid locator, and transmitter power in dBm.

7. Line-of-sight propagation - Wikipedia

   en.wikipedia.org/wiki/Line-of-sight_propagation

   "sectorized" antennas at the base stations. Instead of one antenna with omnidirectional coverage, the station may use as few as 3 (rural areas with few customers) or as many as 32 separate antennas, each covering a portion of the circular coverage. This allows the base station to use a directional antenna that is pointing at the user, which ...