What is the difference between DSB-SC and DSB-FC?

What is the difference between DSB-SC and DSB-FC?

DSB-SC stands for Double SideBand Suppressed Carrier and SSB-SC stands for Single SideBand Suppressed Carrier. Both of these are modulation techiques used in AM(Amplitude Modulated) frequency spectrum. This is referred as balanced modulator.

Is DSB-FC and AM same?

A type of DSB, called binary phase-shift keying, is used for digital telemetry. Amplitude modulation (AM) is similar to DSB but has the advantage of permitting a simpler demodulator, the envelope detector. AM is used for broadcast radio, aviation radio, citizens’ band (CB) radio, and short-wave broadcasting.

Why do we prefer DSB-SC over AM?

Spectrum. DSB-SC is basically an amplitude modulation wave without the carrier, therefore reducing power waste, giving it a 50% efficiency. Single Side Band Suppressed Carrier (SSB-SC) is 100% efficient.

What is the advantage of DSB-SC modulation over AM?

Advantages of DSB-SC modulation It provides 100% modulation efficiency. Due to suppression of carrier, it consumes less power. It provides a larger bandwidth.

What are the benefits of using DSB SC instead of DSB-FC?

The advantages of SSB-SC over DSB-FC signal are :

• Less bandwidth requirements . This allow more number of signals to be transmitted in the same frequency range .
• Lots of power saving . This is due to the transmission of only one sideband component .
• Reduced interference of noise . This is due to the reduced bandwidth .

Which is better DSB or SSB?

The bandwidth is twice that of message signal and power transmitted is more than that in SSB. SSB is better than DSB.

How do I generate DSBSC AM?

The DSB-SC can be generated using either the balanced modulator or the ‘ring-modulator’. The balanced modulator uses two identical AM generators along with an adder. The two amplitude modulators have a common carrier with one of them modulating the input message , and the other modulating the inverted message .

What are the disadvantages of standard AM DSB-FC )?

The disadvantages of standard Amplitude modulation or DSB-FC (Double sideband – Full Carrier ) system are as follows :

• Power wastage takes place in DSB-FC transmission.
• DSB-FC system is bandwidth inefficient system.
• AM wave gets affected due to noise.

What is the bandwidth of DSBSC signal?

Thus, the bandwidth of DSBSC wave is same as that of AM wave and it is equal to twice the frequency of the modulating signal.

What is the main disadvantage of DSB modulation?

Disadvantage of using a DSB or SSB signal modulation is that it is difficult to recover information at the receiver. Demodulation depends upon the carrier present in the received signal at the receiver. If the carrier is not present, carrier has to be regenerated at the receiver so a complex circuitry is required.

What is the disadvantage of DSB?

The disadvantages of standard Amplitude modulation or DSB-FC (Double sideband – Full Carrier ) system are as follows : Power wastage takes place in DSB-FC transmission. DSB-FC system is bandwidth inefficient system. AM wave gets affected due to noise.

Why is SSB better than DSB?

We can see that the SSB transmission does not suffer from the effect of power fading induced by fiber dispersion, while the DSB has a high tolerance to power fading, due to the low frequency of RF carrier [8] . The DSB has a better performance than SSB under short distance because of double sideband. …

Which is easier to demodulate conventional AM or DSB-SC?

1.Demodulation (detection) of conventional AM is easier than that of double sideband suppressed carrier and single sideband amplitude modulated systems. We can use rectifier or envelope detector to demodulate conventional amplitude modulation.

Which is better double sideband or amplitude modulation?

Double sideband (DSB) is one of the easiest modulation techniques to understand, so it is a good starting point for the study of modulation. A type of DSB, called binary phase-shift keying, is used for digital telemetry. Amplitude modulation (AM) is similar to DSB but has the advantage of permitting a simpler demodulator, the envelope detector.

What is the carrier wave in DSBSC modulation?

Analog Communication – DSBSC Modulation. In the process of Amplitude Modulation, the modulated wave consists of the carrier wave and two sidebands. The modulated wave has the information only in the sidebands.

Which is the most efficient modulation scheme AM or SSB?

It is clear from this order of bandwidth required that the single sideband is the most efficient modulation scheme.