Showing 1 - 20 of 81 results

WAN

May 19, 2015

Wide Area Network ...

Video Transmission Services (VTS)

May 19, 2015

The transmission of compressed or wideband video signals. ...

Packet mode

May 19, 2015

A packet switched operational mode for transferring (transporting and switching) user information through a network without establishing a connection. The packets do not necessarily arrive at their destination in the order they were sent, unlike the ...

Packet

May 19, 2015

In data communication, a grouping of a sequence of binary digits, including data and control signals, that is transmitted and switched as a composite whole. The data, control signals, and possibly error control information, are arranged in a specific ...

Narrowcasting

May 19, 2015

Using the electronic media to reach a specific audience ...

Ka-band

May 19, 2015

A higher frequency than Ku-band, operating from 18 to 31 GHz. ...

Hybrid satellite

May 19, 2015

A satellite which carries two or more different communications payloads (i.e., C-band and Ku-band). ...

Hub

May 19, 2015

A network operations center for very small aperture terminal (VSAT) operation (see also Shared Hub). ...

Hertz (Hz)

May 19, 2015

Cycle per second; a measure of electromagnetic frequency that represents the number of complete electrical waves in a second. One kiloHertz (kHz) is one thousand cycles per second; one megaHertz (MHz) is one million; one gigaHertz (gHz) is one billio ...

gHz

May 19, 2015

GigaHertz, equals one billion hertz ...

Gateway

May 19, 2015

In a communication network, one of the network nodes equipped for interfacing with a network using different protocols. Note 1: A gateway may contain devices such as protocol translators, impedance matching devices, rate converters, fault isolation, ...

Full-duplex operation

May 19, 2015

A mode of operation in which simultaneous communication in both directions may occur between two terminals. Contrast with half duplex or simplex operation in which communications occur in only one direction at a time. ...

Demodulation

May 19, 2015

The process for retrieving an information signal that has been modulated onto a carrier. ...

Compression

May 19, 2015

A technique to reduce the amount of data to be transmitted that reduces the amount of bandwidth needed to transmit video or audio, thus increasing the capacity of a satellite transponder. ...

Call

May 19, 2015

(1) Any demand to set up a connection. (2) A unit of traffic measurement. ...

Time Division Multiple Access (TDMA)

May 19, 2015

A method of accessing a satellite using time separation; sending simultaneous data streams interleaved using a clock to separate the various data packets. ...

Television Receive Only (TVRO)

May 19, 2015

A satellite receiving antenna, also known as a downlink or a backyard dish ...

Synchronous transmission

May 19, 2015

Digital transmission in which the time interval between any two similar significant instants in the overall bit stream is always an integral number of unit intervals. Note: Isochronous and anisochronous are characteristics, while synchronous and asyn ...

Spot beams

May 19, 2015

The focusing of energy from a satellite to the ground to concentrate the limited available effective radiated power (EIRP). ...

Internetworking

May 19, 2015

The process of interconnecting a number of individual networks to provide a path from a terminal or a host on one network to a terminal or a host on another network. The networks involved may be of the same type, or they may be of different types. Ho ...