Contents
What is the difference between SSB and DSB-SC wave?
It explains basics of DSBSC and SSBSC and mentions useful difference between terms. 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.
What are the advantages of SSB over DSB-SC a bandwidth efficiency B Power efficiency C reduction in noise?
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 .
What are the advantages of DSB-SC?
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 is the bandwidth of SSB?
Extended single sideband (eSSB)
| Extended SSB modes | Bandwidth | Frequency response |
|---|---|---|
| eSSB (Medium-1) | 4 kHz | 50 Hz ~ 4.05 kHz |
| eSSB (Medium-2) | 4.5 kHz | 50 Hz ~ 4.55 kHz |
| eSSB (Wide-1) | 5 kHz | 50 Hz ~ 5.05 kHz |
| eSSB (Wide-2) | 6 kHz | 50 Hz ~ 6.05 kHz |
What is the main advantage of VSB over SSB?
Advantages of VSB: The main advantage of VSB Modulation is the reduction in bandwidth is the reduction in bandwidth. It is almost as efficient as SSB. Due to allowance of transmitting a part of lower sideband, the constraint on the filters have been relaxed.
What’s the difference between DSB SC and SSB SC?
This page on DSB-SC vs SSB-SC describes difference between DSB-SC and SSB-SC modulation types. It explains basics of DSBSC and SSBSC and mentions useful difference between terms. DSB-SC stands for Double SideBand Suppressed Carrier and SSB-SC stands for Single SideBand Suppressed Carrier.
How is DSB-SC modulated spectrum multiplied at DSBSC receiver?
As shown in the fig-3, at DSBSC receiver, received DSB-SC modulated spectrum is multiplied using local oscillator. This resulting signal is passed through the Low Pass Filter to retrieve back the message signal. The equation is as follows.
Why is carrier signal suppressed in DSB-SC?
Moreover carrier signal consumes a lot of power more than about 50%. Due to this facts, it has been decided to suppress the carrier during the transmission. Only the two side bands which contain the information are transmitted. But this results into system complexity at the receiver.
Can a DSB signal have a constant tone?
Even with AM or DSB signals, where the sidebands contain identical information, unless your conversion is perfect (your LO precisely matches the received carrier frequency), you get distortion — or a constant tone from the AM carrier.