What is single-sideband suppressed carrier modulation?

Single-sideband Suppressed Carrier (SSB-SC) modulation is a technique where the carrier is modulated to produce only a single sideband (either upper or lower) at modulation frequency away from carrier while simultaneously suppressing the carrier, i.e. frequency shifting/conversion.

What is single-sideband used for?

SSB (Single Sideband) is an obscure but very important way to communicate via radio. It is used primarily for two-way voice communication by ham radio operators, aircraft and air traffic control (ATC), ships at sea, military and spy networks. Occasionally some shortwave broadcast stations use this format.

What are the advantages of single-sideband transmission?

As only one sideband is transmitted the receiver bandwidth can be reduced by half. This improves the signal to noise ratio by a factor of two, i.e. 3 dB, because the narrower bandwidth used will allow through less noise and interference.

What is a single-sideband transmitter?

A single-sideband (SSB) transmitter differs from an AM transmitter in that it only transmits either the upper or lower sideband—not both. Thus, an SSB transmitter uses less bandwidth than an AM transmitter.

What are the advantages of SSB SC?

Advantages of SSB-SC Modulation Over DSB-FC 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 .

How is single side band SSB signal generated?

There is no any practical way to achieve such a high value. Thus, modulation at the initial stage is carried out at a low frequency of about 100 KHz by the balanced modulator. After this one sideband is suppressed by the filter. But, as the SSB signal frequency is very low in comparison to transmitter frequency.

What is the difference between SSB and FM?

Firstly, FM is a constant-envelope modulation, meaning the amplitude is constant. SSB, being a kind of amplitude modulation, obviously does not have a constant amplitude. Consequently, FM can employ a non-linear amplifier which is more power efficient, and thus has a longer battery life in mobile operation.

Why SSB signal is not used for broadcasting?

When carrier is shifted to bandpass, this one sided bandwidth becomes 9 MHz. This is nearly ten times as large as the total bandwidth occupied by all the channels of the AM radio. Use of SSB modulation would cut this in half but SSB is not used for video signals because of the complexity of the SSB receivers.

What are the disadvantages of single side band transmission?

The disadvantages of single-sideband modulation mainly include the following.

  • The discovery & generation process of the single-sideband signal is complex.
  • Signal quality will be affected when the transmitter & receiver of SSB have outstanding frequency strength.

Is SSB FM or AM?

What is SSB? Single sideband is a special form of amplitude modulation (AM). What’s so ‘special’ about it? Besides just encoding voice information with variations in signal amplitude, or power, SSB consumes a little less than half the bandwidth of a full “double band” AM signal.