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What is signal degradation in data communications?


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2009-05-27 05:39:12
2009-05-27 05:39:12

A downward change in signal strength where the wave 'Fades' from distance lmitations, interference, noise or EMI.

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Signal Element Versus Data Element: Let us distinguish between a data element and a signal element. In data communications, our goal is to send data elements. A data element is the smallest entity that can represent a piece of information: This is the bit. In digital data communications, a signal element carries data elements. A signal element is the shortest unit (time wise) of a digital signal. In other words, data elements are what we need to send; signal elements are what we can send. Data elements are being carried; signal elements are the carriers.

You will have signal degradation unless you use the amplifier.

Communications - The amplitude of a carrier wave is modulated by a data signal and transmitted, for example by radio wave. At the receiving end it is possible to demodulate the signal if the orignal carrier wave is known and retrieve the data signal

digital signal is less susceptible to signal degradation due to the nature of it's transmission signal which is either on or off and therefore less errors occur as analog is prone to signal degradation and loss that is why digital tv is crisp and clear and analog is somewhat blurry in comparison, also with higher bandwidth achievable by digital transmission more data is able to be transmitted.

RAD Data Communications was created in 1981.

You need to make a distinction between analog and digital signals, and analog and digital data. Digital data can be sent on an analog signal by using a modem. Digital data sent on a digital signal is done over a wire using voltage pulses at two or more levels. Digital signals can't travel very far without amplifiers, but analog signals can cover huge distances, such as with satellite communications and even communications with deep space probes.

Frequency is the number of times a signal changes state in one second. Sometimes compared to cycles per second.

degration means to degrade something.

There are four possible combinations of encoding techniques -Digital data, digital signal -Digital data, analog signal -Analog data, digital signal -Analog data, analog signal

A basic communications system consists of---------- 1.Two computers, one to send and one to receive data 2.communications devices that send and receive data 3. a communications channel over wich data is sent 4.All of the above

Enterprise equipment manufacturers sell data and voice communications equipment

Data communications allows companies and individuals to transmit information or data from one point to another. There are many professions that use data communications systems including systems analysts.

The signal corps provide communications on the battlefield. The attached link explains it in detail.

UTP or unshielded twisted pair cabling is used in local area networks. Two causes of signal degradation are losing light over long distances and low quality cable shielding.

Data is a signal that model a phenomenon.

A: A signal is just information or data. An event is when this data causes something to happen or an event

it delays to deliever the information.

The six elements of a computer and communications system are:peopleproceduresdata/informationhardwaresoftwarecommunications

INFORMATION & COMMUNICATIONS TECHNOLOGY, UNIFIED COMMUNICATIONS, A fusion of DATA Communications, AUDIO, VIDEO & MultimediaCommunication Technologies.

An amplifier is used to increase the strength of the signal.

impedance. An analogue signal, does not have a data, or sample, rate.

to place data on hold while you prepare to receive it.

Modulation is the combining of an information signal (also known as the modulating signal) with a carrier signal.

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