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multiplexing
frequency division multiplexing
frequency division multiplexing (FDM) A form of
multiplexing in which the
bandwidth of the transmission medium is divided into logical channels over which multiple messages can be simultaneously transmitted. FDM is commonly used worldwide to combine multiple voice-grade telephone signals: 4000 hertz (Hz) is allocated for each channel, 3000 Hz per signal plus a 500 Hz
guard band (unused frequency band) on either side of the signal. Many such channels are transmitted simultaneously, making effective use of the bandwidth available.
See also
broadband networking,
time division multiplexing.
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Automakers drive into multiplexing.
Magazine article from: Purchasing; 2/15/1996; ; 700+ words
; Multiplexing, touted for years as a way to reduce...in the next five years. To date, multiplexing has been used primarily in upscale...sophisticated and prevalent in all cars, multiplexing will grow. In 1994, 14% of new vehicles...
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Disney move signals multiplexing delay. (Walt Disney Co. Walt Disney Studios)
Magazine article from: Multichannel News; 11/29/1993; ; 700+ words
; ...other strategies are dominating the multiplexing landscape. While many programmers and operators still consider multiplexing a viable option, growth has slowed...Channel, for example, put its multiplexing plans on hold until capacity improves...
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Spatial multiplexing gains for realistic sized ad hoc networks with directional antenna arrays.(Research Article)
Magazine article from: EURASIP Journal on Wireless Communications and Networking; 1/1/2007; ; 700+ words
; ...arrays capable of allowing both spatial multiplexing and directional processing. Two cases...Our results show that the spatial multiplexing gains depend on the system size, antenna...Furthermore, we show that spatial multiplexing gains offsetting the interference...
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After a quick start, plexing finds niche. (cable television multiplexing)
Magazine article from: Multichannel News; 3/15/1993; ; 700+ words
; ...Premium services cannot live by multiplexing alone. Nineteen months after...strategy, operators consider multiplexing an effective weapon in the war...everyone dominate the present multiplexing landscape. "It's one arrow...
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Plexing vs. mini-pays: three systems report. (multiplexing in the cable television industry)
Magazine article from: Multichannel News; 4/13/1992; ; 700+ words
; ...provides the best bang for the buck - multiplexing or the so-called value-added mini...experimenting with Showtime and Home Box Office multiplexing in its 75,000 subscriber, 54-channel...to his own positive experiences with multiplexing as his reason for rejecting the Encore...
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South Korean Inventor Develops Output Signal Multiplexing Circuit
News Wire article from: US Fed News Service, Including US State News; 10/23/2008; 505 words
; ...South korea, has developed a multiplexing circuit for output signal. According...Office: "Disclosed herein is a multiplexing circuit for decreasing the output...time of an output signal. The multiplexing circuit includes multiplexing...
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Multiplexing, despite successes, faces hurdles.
Magazine article from: Multichannel News; 3/30/1992; ; 700+ words
; ...competitors of Home Box Office's multiplexing plan, cannibalization may as well...them competitors - who charge that its multiplexing efforts are eroding Showtime pay units...its rates as it finds success with multiplexing. However, that is not an immediate...
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Multiplexing calcium mobilization and membrane potential assays.(CELL BASED Assays SUPPLEMENT)
Magazine article from: Bioscience Technology; 8/1/2006; ; 700+ words
; Abstract We present a multiplexing method for HTS screening: loading...Wash Membrane Potential Dye. Multiplexing assays measure orthogonal cell...membrane potential). Introduction Multiplexing in cell-based HTS (simultaneously...
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Harmonic Delivers First Approved Multiplexing Nodes to AT&T Broadband & Internet Services for Salt Lake City Trial.
Business Wire; 7/16/1999; 700+ words
; ...announced it has delivered the first multiplexing nodes to be approved by AT&...technology trial in Salt Lake City. The multiplexing node is one of the building blocks...development and delivery of the Harmonic multiplexing node is a great example of our capability...
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Which multiplexing scheme is best for autos? (Controller Area Network versus SAE J1850)
Magazine article from: EDN; 10/5/1989; ; 700+ words
; Which multiplexing scheme is best for autos? Many auto...from module to module. In contrast, multiplexing provides multiple data paths on a...dual-wire configuration). With multiplexing, the ABS, engine, and transmission...
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multiplexing
Book article from: The Columbia Encyclopedia, Sixth Edition
multiplexing in communication, technique whereby...single common medium, or channel. When multiplexing is performed, two or more channels...subchannels. Many different types of multiplexing are possible. One type is frequency...
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time division multiplexing
Book article from: A Dictionary of Computing
time division multiplexing ( TDM ) A method of sharing a transmission channel among multiple sources...may also be used on channels of a broadband networking system. See also multiplexing , frequency division multiplexing .
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frequency division multiplexing
Book article from: A Dictionary of Computing
frequency division multiplexing ( FDM ) A form of multiplexing in which the bandwidth of the transmission medium is divided into logical...the bandwidth available. See also broadband networking , time division multiplexing .
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statistical multiplexing
Book article from: A Dictionary of Computing
statistical multiplexing A technique of time division multiplexing of a number of subchannels onto a common wider-bandwidth channel, where the total bandwidth required by the individual subchannels exceeds the bandwidth of the multiplex channel...
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Dense Wavelength Division Multiplexing
Book article from: A Dictionary of the Internet
Dense Wavelength Division Multiplexing A technology which is used to increase the BANDWIDTH over existing optical fibre transmission media. It works by using MULTIPLEXING to transmit multiple signals at different wavelengths.
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