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

Metering technologies, Metering Technologies An electric meter or ener...

Metering Technologies An electric meter or energy meter is a device in which measures the amount of electrical energy supplied to customers of an electric supply company. Elec

Give a brief description of integrating circuits, Q. Give a brief descripti...

Q. Give a brief description of integrating circuits ? Integration is a summation of area. An integrating circuit produces an output voltage which is proportional to the area en

Determine what is the minimum required sampling rate, 1. An analog informat...

1. An analog information signal, whose maximum frequency is 6000Hz, is to be transmitted using a PCM system. The quantization error must not exceed the 1 % of the peak-to- peak an

Digital communication , Classify the following signals as energy signals or...

Classify the following signals as energy signals or power signals. Find the normalized energy or normalized power of each. a. ? ? , 0, 0 0, at Ae t a x t elsewhere

Current transformers., CT 10VA, 50A/5A, 6ohz, 2.4KV required nominal primar...

CT 10VA, 50A/5A, 6ohz, 2.4KV required nominal primary voltage?

MECHANICAL SCIENCE, 0PERATION OF POWER TRANSMISSION (SPEED GOVERNORS)

0PERATION OF POWER TRANSMISSION (SPEED GOVERNORS)

PLC and Scada, I needed a PLC and SCADA assignment just the program and it ...

I needed a PLC and SCADA assignment just the program and it has to be done in simatic flexible and step 7 software!

Flexible manufacturing systems, (a) What are the elements of Flexible Manuf...

(a) What are the elements of Flexible Manufacturing Systems? (b) What are the basic types of workstations typically found in an FMS. Describe them briefly?

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