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What is the difference in the usefulness of upper-sideband and lower sideband transmission?
Wiki User
∙ 11y ago
There's no difference in their usefulness, and no basis for any preference on
the part of the transmitting party. There's an advantage to the receiving party,
however, if he can coordinate with the transmitting party. The advantage of
having a choice is that you can choose whichever mode encounters less
interference, and you can switch 'on the fly' if the congestion/interference
environment changes.
Upper sideband may be somewhat more difficult to receive clearly. This isn't a
technical issue, though. It's just sometimes harder for the operator behind the
tuning knob to tune it clearly, and slightly-mistuned upper sideband is harder to
understand than slightly-mistuned lower sideband is, because the frequencies
in the voice are inverted relative to each other.
Wiki User
∙ 11y ago
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Which are the applications of vestigial sideband?
Vestigial Sideband Transmission is used for the transmission of Television signals.Because the video signals need a large transmission bandwidth if transmitted using DSB-FC or DSB-SC techniques.
How single sideband is being generated?
In regards to the radio transmission mode, SSB is an improvement of AM, and there are generally three ways single sideband can be generated -- filtering out the unwanted sideband and suppressing the carrier; using phasing to suppress the unwanted sideband and carrier (Hartley modulator); or quadrature mixing and filtering (Weaver modulator).
What the difference between single side band single carrier transmission and full carrier AM?
1. Single-sideband transmission requires only half as much bandwidth as double sideband.2. SSBSC require less total transmitted power than full carrier AMIn full carrier AM, the transmitted signal consists of two sidebands (containing the transmitted information) and the carrier signal. Long ago, it was realized that both sidebands contained the same information, and the carrier signal could be supplied by the receiver. Thus, if you suppress transmitting the carrier and one sideband, you can use the available power to increase the power in the remaining sideband.
Examples of Double SideBand and Single SideBand applications Elaborate your answers?
Explain the difference between the various forms of a.m & f.m and which jutifies the radio station's choice of modulation for each waveband?
What is vestigial side band transmission?
Vestigial sideband (VSB) is a type of amplitude modulation ( AM ) technique (sometimes called VSB-AM ) that encodes data by varying the amplitude of a single carrier frequency . Portions of one of the redundant sidebands are removed to form a vestigial sideband signal - so-called because a vestige of the sideband remains.
When was Shasta sideband created?
Shasta sideband was created in 1933.
What is analog modulation?
Analog modulationIn analog modulation, the modulation is applied continuously in response to the analog information signal.Common analog modulation techniques are:Amplitude modulation (AM) (here the amplitude of the modulated signal is varied) Double-sideband modulation (DSB) Double-sideband modulation with unsuppressed carrier (DSB-WC) (used on the AM radio broadcasting band)Double-sideband suppressed-carrier transmission (DSB-SC)Double-sideband reduced carrier transmission (DSB-RC)Single-sideband modulation (SSB, or SSB-AM), SSB with carrier (SSB-WC)SSB suppressed carrier modulation (SSB-SC)Vestigial sideband modulation (VSB, or VSB-AM)Quadrature amplitude modulation (QAM)Angle modulation Frequency modulation (FM) (here the frequency of the modulated signal is varied)Phase modulation (PM) (here the phase shift of the modulated signal is varied)
Am single-sideband full carrier?
single sideband full carrier
Why AM is used in TV video signals transmission and not FM?
AM has a smaller sideband bandwidth than FM, since the baseband bandwidth of NTSC video is already about 4.5MHz, using AM vestigial sideband the resulting bandwidth is only just under 6MHz (without partially suppressing one sideband, the resulting bandwidth would have been about 9MHz). Had FM been used instead the resulting bandwidth might have been around 100MHz instead.
What causes sideband frequency?
If you subtract from the carrier frequency the frequency of the tone that modulates it, then filter out the carrier frequency, then you have a lower sideband frequency. If you add to the carrier frequency, filter out the carrier, then you have an upper sideband frequency.
What is bandwidth required for AM signal?
With full double sideband AM the bandwidth of the modulated signal is twice that of the baseband information signal. With suppressed carrier single sideband AM the bandwidth of the modulated signal is identical to that of the baseband information signal. With vestigial sideband AM the bandwidth of the modulated signal is somewhere between the above two cases, depending on how much of the vestigial sideband is included.
Why is use only one sideband for the transmission of the information?
Single sideband suppressed carrier is a transmission mode that maximizes the amount of energy that the carrier uses with which to send information. In normal double sideband non-suppressed, which is standard AM broadcast style, the carrier transmits no information, and the two sidebands transmit redundant information. Suppressing the carrier is one way to put more energy into the signal. Suppressing one of the sidebands is a second stage way to do this as well. Of course, this comes with operational complexity. The receiver is more complex, but you do gain more distance because more power goes into the signal, i.e. there is no carrier and there is no redundancy.
