Multiplexing

Central Office Multiplexing (or CO Muxing) is Central Office equipment that derives a number of lower speed channels from one high- bandwidth channel. Central Office multiplexing is needed when the customer wants to terminate the DS1 or DS3 in the Central Office and wants to ‘pick up’ lower level services. For example, a customer may order a DS3, using it to carry a number of DS1 level services from different IXC carriers. ...more on Wikipedia about "Central Office Multiplexing"

Code division multiple access (CDMA) is a form of multiplexing (not a modulation scheme) and a method of multiple access that does not divide up the channel by time (as in TDMA), or frequency (as in FDMA), but instead encodes data with a certain code associated with a channel and uses the constructive interference properties of the signal medium to perform the multiplexing. CDMA also refers to digital cellular telephony systems that make use of this multiple access scheme, such as those pioneered by Qualcomm, or W-CDMA. ...more on Wikipedia about "Code division multiple access"

Digital Multiplex System (DMS) is the name shared among several different telephony product lines from Nortel Networks for wireline and wireless operators. Among them are the DMS-1 Rural/Urban digital loop carrier, DMS-10 telephone switch, the DMS SuperNode family of telephone switches ( DMS-100, DMS-200, DMS-250, DMS-300, DMS-500, DMS-GSP, DMS-MSC, DMS-MTX), and the S/DMS optical transmission system. ...more on Wikipedia about "Digital Multiplex System"

The DMS-100 Switch is one of a line of Digital Multiplex System (DMS) telephony switches manufactured by Nortel Networks. ...more on Wikipedia about "DMS-100"

Early completion is a property of some classes of asynchronous circuit. It means that the output of a circuit may be available as soon as sufficient inputs have arrived to allow it to be determined. For example, if all of the inputs to a mux have arrived, and all are the same, but the select line has not yet arrived, the circuit can still produce an output. Since all the inputs are identical, the select line is irrelevant. ...more on Wikipedia about "Early completion"

FDMA, or frequency-division multiple access, is the oldest and most important of the three main ways for multiple radio transmitters to share the radio spectrum. The other two methods are Time Division Multiple Access ( TDMA), and Code Division Multiple Access ( CDMA). FDMA is similar in concept to the 100 channels that share the FM broadcast spectrum in the USA. Each station transmits on its own assigned frequency. This allows multiple users to transmit simultaneously within the same spectrum (in this case, 88MHz-108MHz). ...more on Wikipedia about "Frequency-division multiple access"

Frequency-division multiplexing (FDM) is a form of signal multiplexing where multiple baseband signals are modulated on different frequency carrier waves and added together to create a composite signal. ...more on Wikipedia about "Frequency-division multiplexing" www.shortopedia.com, just the best.

A multiplexer combines more than one input into a single output. In electronics, the multiplexer or mux combines several electrical signals into a single signal. There are different types of multiplexers for analog and digital circuits. ...more on Wikipedia about "Multiplexer"

In telecommunications, multiplexing (also muxing or MUXing) is the combining of two or more information channels onto a common transmission medium using hardware called a multiplexer or (MUX). The reverse of this is known as inverse multiplexing, demultiplexing, or demuxing. George O. Squier ( 1863– 1934) invented the principle in 1910 using a carrier frequency to combine multiple telephone signals on one telephone line. ...more on Wikipedia about "Multiplexing"

Orthogonal frequency-division multiplexing (OFDM), also sometimes called discrete multitone modulation (DMT), is a transmission technique based upon the idea of frequency-division multiplexing (FDM). ...more on Wikipedia about "Orthogonal frequency-division multiplexing"

Perfect clock gating refers to a property of some classes of asynchronous circuits whereby the circuit only generates logic transitions when it is actively computing. The technique of clock gating is used in synchronous circuitry to disable portions of a circuit when they are not actively performing computation. Although asynchronous circuits by definition do not have a "clock", the term "perfect clock gating" is used to illustrate how various clock gating techniques are simply approximations of the data-dependent behavior exhibited by asynchronous circuitry, and that as the granularity on which you gate the clock of a synchronous circuit approaches zero, the power consumption of that circuit approaches that of an asynchronous circuit. ...more on Wikipedia about "Perfect clock gating"

Quasi Delay Insensitive Circuits are a class of delay-insensitive asynchronous circuit which are invariant to (and make no assumptions about) the delays of any of the circuit's elements, except to assume that certain fanouts are isochronic forks. Isochronic fork allow signals to travel to two destinations and only receive an acknowledge from one. Isochronic forks are forks in wires where if the acknowledging target has seen a transition on their end of the fork then the transition must have also happened on the other end of the fork too. There are two types of isochronic forks; the asymmetric types only ensure that the signal will reach acknowledging fork tip before or at the same time as it will at the other fork tip, while the symmetric type ensures that both fork tips will be reached at the same time. Symmetrical isochronic forks allow either of the targets to acknowledge the signal. In QDI circuits all forks have to be either isochronic and acknowledged by one of the destinations, or acknowledged by all destinations. ...more on Wikipedia about "Quasi Delay Insensitive"

Statistical multiplexing is similar to time-division multiplexing (TDM), except that, rather than arbitrarily assigning a time slot to each signal, each signal is assigned a slot according to priority and need. ...more on Wikipedia about "Statistical multiplexing"

In data communications, Synchronous Code Division Multiple Access (or SCDMA), is a multiplex method based on spread-spectrum code division multiple access. ...more on Wikipedia about "Synchronous Code Division Multiple Access"

Time Division Multiple Access (TDMA) is a technology for shared medium (usually radio) networks. It allows several users to share the same frequency by dividing it into different time slots. The users transmit in rapid succession, one after the other, each using their own timeslot. This allows multiple users to share the same transmission medium (e.g. radio frequency) whilst using only the part of its bandwidth they require. Used in the GSM, PDC and iDEN digital cellular standards, among others. TDMA is also used extensively in satellite systems, local area networks, physical security systems, and combat-net radio systems. ...more on Wikipedia about "Time division multiple access"

Time-division multiplexing (TDM) is a type of digital multiplexing in which two or more apparently simultaneous channels are derived from a given frequency spectrum, i.e., bit stream, by interleaving pulses representing bits from different channels. ...more on Wikipedia about "Time-division multiplexing"

In fibre optic telecommunications, wavelength-division multiplexing (WDM) is a technology which multiplexes multiple optical carrier signals on a single optical fibre by using different wavelengths (colours) of laser light to carry different signals. This allows for a multiplication in capacity, in addition to making it possible to perform bidirectional communications over one strand of fibre. ...more on Wikipedia about "Wavelength-division multiplexing"

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