Introduction to Analog and Digital Communication | The Basic Block Diagram of
Communication System
The communication between two points is done by exchanging information. The electronic gadget used
for this is the transmitter and the receiver. The transmitted signal is the signal after the transmitter and
it is sent over a particular channel. The channel partially behaves like a filter and attenuates the different
frequencies of the signal differently. The amount of attenuation and distortion will depend on the length
of the channel. Many times the signal needs to be transmitted over much longer distance. And it is not
possible to increase the signal power beyond a certain limit. So regenerative repeaters are used to
increase distance over which the signal can be transmitted.
Analog and digital communication are the two main topics discussed in this video. In this video, we will
discuss analog communication, which is the traditional way of transmitting information. Digital
communication, on the other hand, is the use of electronic signals that can be converted into images,
sounds, or data. We will also discuss some of the advantages and disadvantages of each type of
communication.
What is Modulation ? Why Modulation is Required ? Types of Modulation Explained.
ALL ABOUT ELECTRONICS
Communication is the exchange of information between two points that are distant from each other.
This information could be a voice signal, an email signal, or a television signal. However, the baseband
signal cannot be transmitted directly. But with the help of the highfrequency periodic signal, it can be
transmitted. There are different types of modulation, and the first reason to use this modulation is to
reduce the antenna size. So, for example, if the transmitted signal has a frequency of 10 khz, if the signal
is transmitted at 10 mhz, then the length of the antenna will reduce by the factor of 1000. That means in
that case, the length will be equal to 7.5 m. The second reason for the modulation is to reduce
interference. So using the modulation can be reduced. And at the same time, the multiplexing of the
different signals is also possible. There are four different types of modulation techniques:
pulseamplitude modulation, pulse width modulation, pulse width modulation, and pulse position
modulation. In all these techniques, the message signal is analog in nature while the carrier signal is a
pulse train of the finite frequency.
In the pulse code modulation, the message signal is sampled at the finite interval and the sampled value
is quantized using the quantization process. And then using the analog to digital converter, the signal
signal is encoded. In future videos, we will see some of these modulation schemes in detail
Communication System
The communication between two points is done by exchanging information. The electronic gadget used
for this is the transmitter and the receiver. The transmitted signal is the signal after the transmitter and
it is sent over a particular channel. The channel partially behaves like a filter and attenuates the different
frequencies of the signal differently. The amount of attenuation and distortion will depend on the length
of the channel. Many times the signal needs to be transmitted over much longer distance. And it is not
possible to increase the signal power beyond a certain limit. So regenerative repeaters are used to
increase distance over which the signal can be transmitted.
Analog and digital communication are the two main topics discussed in this video. In this video, we will
discuss analog communication, which is the traditional way of transmitting information. Digital
communication, on the other hand, is the use of electronic signals that can be converted into images,
sounds, or data. We will also discuss some of the advantages and disadvantages of each type of
communication.
What is Modulation ? Why Modulation is Required ? Types of Modulation Explained.
ALL ABOUT ELECTRONICS
Communication is the exchange of information between two points that are distant from each other.
This information could be a voice signal, an email signal, or a television signal. However, the baseband
signal cannot be transmitted directly. But with the help of the highfrequency periodic signal, it can be
transmitted. There are different types of modulation, and the first reason to use this modulation is to
reduce the antenna size. So, for example, if the transmitted signal has a frequency of 10 khz, if the signal
is transmitted at 10 mhz, then the length of the antenna will reduce by the factor of 1000. That means in
that case, the length will be equal to 7.5 m. The second reason for the modulation is to reduce
interference. So using the modulation can be reduced. And at the same time, the multiplexing of the
different signals is also possible. There are four different types of modulation techniques:
pulseamplitude modulation, pulse width modulation, pulse width modulation, and pulse position
modulation. In all these techniques, the message signal is analog in nature while the carrier signal is a
pulse train of the finite frequency.
In the pulse code modulation, the message signal is sampled at the finite interval and the sampled value
is quantized using the quantization process. And then using the analog to digital converter, the signal
signal is encoded. In future videos, we will see some of these modulation schemes in detail
