Type of modulation advantages and disadvantages
Answers
Answer:
advantages =
The antenna used for transmission, had to be very large, if modulation was not introduced. The range of communication gets limited as the wave cannot travel to a distance without getting distorted.
Following are some of the advantages for implementing modulation in the communication systems.
Antenna size gets reduced.
No signal mixing occurs.
Communication range increases.
Multiplexing of signals occur.
Adjustments in the bandwidth is allowed.
Reception quality improves.
disadvantages=
In the transmission section, we don’t need any special equipment but in the reception, we need more complicated demodulators for demodulating the carrier signal from message or modulating signal.
Frequency modulation cannot be used to find out the speed and velocity of a moving object. Static interferences are more when compared to phase modulation. Outside interference is one of the biggest disadvantages in the frequency modulation. There may be mixing because of nearby radio stations, pagers, construction walkie-talkies etc.
To limit the bandwidth in the frequency modulation, we use some filter which will again introduce some distortions in the signal.
Transmitters and receiver should be in same channel and one free channel must be there between the systems.
Spectrum space is limit for the frequency modulation and careful controlling the deviation ration.
Explanation: