Interested to Buy Any Domain ? << Click Here >> for more details...
what is need of modulation & de-modulation in communication?
- 6 Answers
- 8895 Views
- I also Faced
- E-Mail Answers
Answer Posted / reza r
Modulation is used in order to achieve some of the followings:
1- To put the signal on a carrier frequency we have, for
example we have a channel that can only carry frequencies
between 30~31MHz, an we have to transfer our speech over
this channel (Bandwidth of speech is 0~4KHz), so we use
modulation to mount the signal over the available channel.
2- To minimize the destructive channel effects such as
noise, interference and so on. destructive effects will vary
on the different frequencies.
3- in order to decrease the size of the antenna! (antenna
size depends on the Landa (wavelength of the signal). The
higher the frequency, the lower the wavelength. The lower
the wavelength, the smaller the antenna size!
also there is some other benefits in modulation...
| Is This Answer Correct ? | 0 Yes | 2 No |
Post New Answer View All Answers
what is semi&full custom difference b/w these two?
sample & previous year papers of sta & je (electronics 0
What is Not-So-Stubby (NSSA)in Open Shortest Path First?
What are the different oscillators?
which are the five general EMI(electromagnetic interference) testings conducted on any system?
What is race around condition in a jk flipflop?
please define master-slave flip flop briefly.
what happens when a cdma user becomes as a roamer?
what is the function of solid state relay (SSR)
today software are down how u are u going to clear this?
Explain what are differential gain and common-mode gain of a differential amplifier?
Define digital system?
Convert 1024 (in decimal) to octa and hexadecimal form
i having one cisco 2950 switch,but i having no rights of ythis switch,now i want to know switch macc addrerss of particular network ip,how can i resolved?
What is inductor?
