co-frequency operation
51Dynamic single-frequency networks — (DSFN) is a transmitter macrodiversity technique for OFDM based cellular networks. DSFN is based on the idea of single frequency networks (SFN), which is a group of radio transmitters that send the same signal simultaneously over the same… …
52UMTS frequency bands — or frequency ranges are the radio spectrum frequencies designated for the operation of the UMTS / HSDPA / HSUPA / HSPA+ system for mobile phones. UMTS FDD UMTS FDD is designed to operate in the following paired bands:Deployment in other frequency …
53Push-to-type operation — Push to type operation: In telegraph or data transmission systems, that method of communication in which the operator at a station must keep a switch operated in order to send messages. Note 1: Push to type operation is used in radio systems… …
54Multi-frequency network — Introduction Data networks, such as wireless communication networks, have to trade off between services customized for a single terminal and services provided to a large number of terminals. For example, the distribution of multimedia content to… …
55Gordian Knot Operation — The Gordian Knot Operation ( Operação Nó Górdio ) was the largest and most expensive Portuguese military campaign in the Portuguese overseas province of Mozambique, East Africa. It was performed in 1970, during the Portuguese Colonial War (1961… …
56Cyber Troopers Virtual-On: Operation Moongate — Developer(s) Sega AM3 Publisher(s) Sega …
57Amateur radio mobile operation — refers to the use of amateur radio equipment from a moving vehicle. An amateur radio transceiver designed specifically for use in vehicles is usually mounted with the microphone and control panel in reach of the driver. In the United States, such …
58Net operation — In telecommunication, net operation is the operation of an organization of stations capable of direct communication on a common channel or frequency. Note: Net operations (a) allow participants to conduct ordered conferences among participants… …
59Ultrasonic Machining Operation — Ultrasonic Machining, also known as ultrasonic impact grinding(2), is a cold cutting operation(1) in which an abrasive slurry freely flows between the workpiece and the vibrating tool. The tool never contacts the workpiece and as a result the… …
60time and frequency standard — A reference value of time and time interval. Standards of time and frequency are determined by astronomical observations and by the operation of atomic clocks and other advanced timekeeping instruments. They are disseminated by transport of… …
