radio communication system
21communication equipment — noun facility consisting of the physical plants and equipment for disseminating information • Syn: ↑communication system • Hypernyms: ↑facility, ↑installation • Hyponyms: ↑fiber optic transmission system, ↑fi …
22radio relay — /reɪdioʊ ˈrileɪ/ (say raydeeoh reelay) noun a system which receives radio signals and retransmits them, thus establishing radio communication between two points which could not otherwise communicate directly …
23Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …
24Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …
25Communication with extraterrestrial intelligence — (CETI) is a branch of the search for extraterrestrial intelligence that focuses on composing and deciphering messages that could theoretically be understood by another technological civilization. The best known CETI experiment was the 1974… …
26Communication with submarines — is difficult because radio waves do not travel well through thick electrical conductors like salt water. The obvious solution is to surface and raise an antenna above the water, then use ordinary radio transmissions. Early submarines had to… …
27Radio resource management — (RRM) is the system level control of co channel interference and other radio transmission characteristics in wireless communication systems, for example cellular networks, wireless networks and broadcasting systems. RRM involves strategies and… …
28Communication during the September 11 attacks — Communication problems and successes played an important role in the September 11, 2001 attacks and their aftermath. Contents 1 Attackers 2 Federal government 3 First responders 4 Victims …
29Software-defined radio — A Software Defined Radio (SDR) system is a radio communication system where components that have typically been implemented in hardware (i.e. mixers, filters, amplifiers, modulators/demodulators, detectors. etc.) are instead implemented using… …
30Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …
