What do you mean by communication channel, Electrical Engineering

Assignment Help:

Q. What do you mean by communication channel?

The communication channel (transmissionmedium) is the physicalmediumthat is utilized to send the signal from the transmitter to the receiver. In wireless transmission, such as microwave radio, the transmission medium is usually the atmosphere or free space. Telephone channels, on the other hand, employ a variety of physical media such as wire lines and optical fiber cables. Irrespective of the type of physical medium for signal transmission, the essential feature is that the transmitted signal is corrupted in a random manner by a variety of possible mechanisms. For simplicity, the effects of these phenomena (attenuation, distortion, interference, noise, etc.) are shown at the center of Figure, since the transmission medium is often the most vulnerable part of a communication system, particularly over long distances.

2180_Signals and spectral analysis.png

Attenuation, caused by losses within the system, reduces the size or strength of the signal, whereas distortion is any alteration of the waveshape itself due to energy storage and/or non-linearities. Contamination by extraneous signals causes interference, whereas noise emanates from sources both internal and external to the system. To eliminate any one of these may pose a challenge to the design engineer.


Related Discussions:- What do you mean by communication channel

Assignment, design a half wave bridge rectifier to perform the function ind...

design a half wave bridge rectifier to perform the function indicated

Transformer, What is the difference between primary and secondary winding o...

What is the difference between primary and secondary winding of transforme

Monostable delay in matlab, how to implement monostable delay in matlab sim...

how to implement monostable delay in matlab simulink environment? [email protected]

Rc phase shift, what is the equation for rc phase shift oscillator?

what is the equation for rc phase shift oscillator?

Test quipment, The frequency of an oscillator may be measured by an oscillo...

The frequency of an oscillator may be measured by an oscilloscope with a callbrated time base(True/False)

Basic circuit elements, Define inductance.Explain the classification of ind...

Define inductance.Explain the classification of inductors

logical and with accumulator instruction , ANA  Logical AND with Accumula...

ANA  Logical AND with Accumulator Instruction This  instruction is used to logically AND the accumulator  of any register or memory location  with the  accumulator and the r

Phisics, deriving formula of the frictional force

deriving formula of the frictional force

Explain the methods of analysis for digital system, Q. Explain the Methods ...

Q. Explain the Methods of Analysis for digital system? Just as differential equations are used to represent systems with analog signals, difference equations are used for syste

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd