What is Modulation and Demodulation?
Answers were Sorted based on User's Feedback
Answer / kamaljeet singh sidhu
The process of changing the properties of carrier signal
according to the modulating signal is known as MODULATION.
The process recovering the modulating signal from the
modulated signal is known as DEMODULATION
Is This Answer Correct ? | 11 Yes | 1 No |
Answer / varun
low frequency is not suitable for long distance
communication. so we uses modulation technique to make it.
Is This Answer Correct ? | 7 Yes | 1 No |
Answer / ramesh kumar
low frequency is not suitable for long distance
communication. so we uses modulation technique to make it
and retrieving again these signal back to original signal
is called demodulation.
Is This Answer Correct ? | 6 Yes | 2 No |
Answer / ashwani pandey
Modulation is the process of changing the characterstic of
carrier signal
according to the modulating signal is known as MODULATION.
Demodulation is the process recovering the modulating
signal from the
modulated signal is known as DEMODULATION
Is This Answer Correct ? | 2 Yes | 0 No |
If we radiate a simple r.f. carrier it conveys no information other than the fact that its transmitter is working. Not much use is it?
The name "carrier" suggests that it is capable of carrying information.
The information is applied to the carrier so that the carrier's characteristics are changed. It is these changes which represent the information being carried.
Changes to the carrier's characteristics are called modulation.
The two most common ways that the information can change its carrier's characteristic are by altering the amplitude of the carrier (it should come as no surprise to learn that this is called amplitude modulation, abbreviated to a.m.), and by altering the frequency of the carrier (which, of course, is f.m.)
The process of recovering the information imposed upon a carrier (the modulation) is called demodulation or detection.
Exactly the same processes are encountered in audio.
If an audio note has its amplitude varied (modulated) to and fro (up and down) it is called tremolo - in r.f. we call it a.m. (it's the same thing).
If an audio note has its frequency varied back and forth, it is called vibrato - in r.f. we call it f.m. (it's the same thing).
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / nitesh
if we use low freq signal then we ave to increase the
antenna hight so we are modulating to higher freq and
demodulating it back in recver side
Is This Answer Correct ? | 0 Yes | 1 No |
Answer / nikky
the process of changing the incoming waves according to its
receiving device called modulation.
change the output of modulation into its actual form called
demodultion
Is This Answer Correct ? | 0 Yes | 1 No |
what is invrter?
HOW TO CHANGE SCHEDULING ALGORITHM OF A LINUX KERNEL THREAD DYNAMICALLY
1 Answers Anna University, Wipro,
connecting 2 transistor seriesly.In 1st trans base applying 5v then how the current will go.
How to calculate knee point voltage? Describe its purpose for differential protection.
W#hat is the Present cabling used in Ethernet? and present days networks?? And What is the mostly used topology now a dyas?
how the silicon knows 0's and 1's...
what is serial communication??
hi, i am anjali. i m doing 3rd EIE in one of the top colleges affliated to anna university. i m really confused between whether to do ME or goto job , gain sum experience and then do MBA.all say that if v do ME , lecturer field is the only job oppurtunity that job oppurtunities in core companies for girls are very difficuilt and they r not well paid too..i dont want to go in teaching field. in my college too for campus only few core companies are coming and they too recruit only guys. but top software companies are comning for campus . other set say me to get placed in a software company in campus, gain experience & do MBA. pls help me by giving ur suggestions friends.
What is the main differnce between the SCADA and HMI also what is DCS?
hi friends. what type of question they wil ask in technical and HR i m ECE student............
i want exam information bhel, nal, hal, bel you have any idea or any question papers or placement papers please send soon
filtering can be done with: i)capacitor,ii)inductor,iii)both,iv)none.