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Encyclopedia > Broadband

Broadband in telecommunications is a term that refers to a signaling method that includes or handles a relatively wide range of frequencies, which may be divided into channels or frequency bins. Broadband is always a relative term, understood according to its context. The wider the bandwidth, greater is the information carrying capacity. In radio, for example, a very narrow-band signal will carry Morse code; a broader band will carry speech; a still broader band is required to carry music without losing the high audio frequencies required for realistic sound reproduction. A television antenna described as "normal" may be capable of receiving a certain range of channels; one described as "broadband" will receive more channels. In data communications a modem will transmit a bandwidth of 64 kilobits per seconds (kbit/s) over a telephone line; over the same telephone line a bandwidth of several megabits per second can be handled by ADSL, which is described as broadband (relative to a modem over a telephone line, although much less than can be achieved over a fibre optic circuit, for example). Telecommunication involves the transmission of signals over a distance for the purpose of communication. ... FreQuency is a music video game developed by Harmonix and published by SCEI. It was released in November 2001. ... A relative term, also called a rhema or a rheme, is a logical term that requires reference to any number of other objects, called the correlates of the term, in order to denote a definite object, called the relate (pronounced with the accent on the first syllable) of the relative... -1... 1922 Chart of the Morse Code Letters and Numerals Morse code is a method for transmitting telegraphic information, using standardized sequences of short and long elements to represent the letters, numerals, punctuation and special characters of a message. ... For other uses, see Music (disambiguation). ... An audio frequency (abbreviation: AF) is any frequency from about 20 hertz to about 20 kilohertz, which is the approximate range of sound frequencies that is audible to humans. ... Sound reproduction is the electrical or mechanical re-creation and/or amplification of sound, often as music. ... For other uses, see Modem (disambiguation). ... A telephone line (or just line) is a single-user circuit on a telephone communications system. ... Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional modem can provide. ... Fiber Optic strands An optical fiber in American English or fibre in British English is a transparent thin fiber for transmitting light. ...


Broadband in data communications may have the same meaning as above, so that data transmission over a fiber optic cable would be referred to as broadband as compared to a telephone modem operating at 600 bits per second. A computer network is a system for communication among two or more computers. ... Data transmission is the conveyance of any kind of information from one space to another. ... Fiber Optic strands An optical fiber in American English or fibre in British English is a transparent thin fiber for transmitting light. ... For other uses, see Modem (disambiguation). ... In telecommunications and computing, bitrate (sometimes written bit rate, data rate or as a variable Rbit) is the number of bits that are conveyed or processed per unit of time. ...


However, broadband in data communications is frequently used in a more technical sense to refer to data transmission where multiple pieces of data are sent simultaneously to increase the effective rate of transmission, regardless of actual data rate. In network engineering this term is used for methods where two or more signals share a medium. A computer network is a system for communication among two or more computers. ... In telecommunication, data signaling rate (DSR) is the aggregate rate at which data pass a point in the transmission path of a data transmission system. ... In telecommunication, the term network engineering has the following meanings: 1. ...


Various forms of Digital Subscriber Line(DSL) services are broadband in the sense that digital information is sent over one channel and voice over another channel sharing a single pair of wires. Analog modems operating at speeds greater than 600 bit/s are technically broadband. They obtain higher effective transmission rates by using multiple channels with the rate on each channel limited to 600 baud. For example, a 2400 bit/s modem uses four 600 baud channels (see baud). This is in contrast to a baseband transmission where one type of signal uses a medium's full bandwidth such as 100BASE-T Ethernet. A DSL Modem DSL or xDSL, is a family of technologies that provide digital data transmission over the wires of a local telephone network. ... For the town in France, see Baud, Morbihan. ... For the town in France, see Baud, Morbihan. ... Baseband is an adjective that describes signals and systems whose range of frequencies is measured from 0 to a maximum bandwidth or highest signal frequency; it is sometimes used as a noun for a band of frequencies starting at 0. ... 100BASE-T is any of several Fast Ethernet 100 Mbit/s (12. ... Ethernet is a large, diverse family of frame-based computer networking technologies that operate at many speeds for local area networks (LANs). ...


Ethernet, however, is the common user interface even to DSL data links. Ethernet provisioned over cable modem often is a competitive alternative to DSL, especially in the small office/home office market. Motorola Surfboard cable modem A cable modem is a type of modem that provides access to a data signal sent over the cable television infrastructure. ... The modern concept of Small Office and Home Office or SoHo, or Small or Home Office deals with the category of business which can be from 1 to 10 workers. ...


Users who need more than DSL or cable modem speeds will often use metro ethernet, when available, rather than older and often more expensive (per megabit) than T-carrier, E-carrier in appropriate parts of the world, or Asynchronous Transfer Mode. Metro ethernet is usually implemented over a metropolitan all-optical network. Two Network Interface Units, one with a single card, the other with two In telecommunications, T-carrier is the generic designator for any of several digitally multiplexed telecommunications carrier systems originally developed by Bell Labs and used in North America and Japan. ... Asynchronous Transfer Mode (ATM) is a cell relay, packet switching network and data link layer protocol which encodes data traffic into small (53 bytes; 48 bytes of data and 5 bytes of header information) fixed-sized cells. ...


  Results from FactBites:
 
FCC Strategic Goals: Broadband (258 words)
Broadband is changing how we communicate with each other, how and where we work, how we educate our children, and how we entertain ourselves.
Broadband is particularly critical in rural areas, where advanced communications can shrink the distances that isolate remote communities.
Congress recognized the importance of broadband in Section 706 of the 1996 Telecommunications Act, which directs the FCC to “encourage the deployment on a reasonable and timely basis of advanced telecommunications capability to all Americans.” The Commission’s goals are to:
DSL · Cable · VOIP · Security · Satellite · Fiber · News · Tips ... (1876 words)
The discussion of broadband caps has re-kindled calls (mostly by industry) that we shift from a flat rate system to a billed by the byte bandwidth model.
By February 17, 2009, consumers will need to buy a digital converter box or new tuner to get their TV fix, and the digital TV transition is going to confuse the hell out of some people.
The FCC last week denied (pdf) a request by M2Z networks that would have offered free nationwide broadband using a 20MHz chunk of unused spectrum in the 2GHz band.
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