what is need of modulation & de-modulation in communication?

Answer Posted / dk

the signal that is transmitted will become weak as it continues to propagate in the communication channel.so high frequency carrier wave is added along with the transmitting signal.this process is called as modulation.after reaching the receiver side the original information has to be obtained.so carrier wave is seperated from signal,this process is called as demodulation.

Is This Answer Correct ?    3 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is soft & hard andover????

1788


sir i want polytechnic lecturers model papers plzzzzzzzzz send me my mail id: manisri.bobbala@gmail.com

2205


important questions about sip and ims protocols

10024


Give the difference between transducer and transponder?

534


what is Global Call

649






Derive the expressions for average output voltage and rms output voltage of 1φ semi converter?

609


R/s syllabus required to crack Mahagenco interview for jr eng. post. I also want sample papper

2183


Noise with uniform power spectral density of n0w/hz is passed through a filter h (w) = 2 exp(-jwtd) followed by an ideal low pass filter of bandwidth bhz. What is the output noise power in watts?

830


Explain digital circuits?

659


What are the advantages of gto over scr?

1243


what is a voltage transfer curve of an op-amp?

650


Explain the difference between latches and flip flop?

551


What is the approximate cost of the corrosion penetration monitoring system(cpmp)?

468


Why do we convert frequency domain to laplace domain?

589


What electron gun assembly is provided in crt?

605