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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)
Disadvantge of SSB modulation?
envelop detection not possible.
Which analog modulation scheme requires minimum transmitted power and minimum channel bandwidth?
ssb modulation scheme
Which are the three forms of modulation?
There are actually 4 forms. The first and most common is AM, the next is SSB or Single Side band, the third is FM (Frequency Modulation) and the fourth is Digital
Why SSB is not suitable for video signal transmission?
Single Sideband (SSB) modulation is generally not suitable for video signal transmission due to its inherent complexity and the nature of video signals, which require a substantial bandwidth to accurately convey high-frequency details and rapid changes in luminance and chrominance. SSB is designed for efficient voice communication, where the bandwidth can be constrained, but video signals contain a wide range of frequencies and require continuous transmission of large amounts of data. Additionally, the SSB demodulation process can introduce delays and distortions that are unacceptable for real-time video applications. Hence, modulation schemes specifically tailored for higher bandwidth and quality, like amplitude modulation (AM) or frequency modulation (FM), are preferred for video transmission.
What is advantage of single side band?
An advantage of a single side band (SSB) is that it only needs half the bandwidth of AM. AM stands for amplitude modulation.
What is SSB radio?
'SSB' stands for "single sideband modulation".
Disadvantages of DSB-SC modulation?
-Carrier not available in receiver -Envelope detection not possible
What are the advantage and disadvantage of SSB sc modulating signal?
The advantages of DSB-SC are that power consumption is nominal, the power from the signal can be contained in four sidebands, and the bandwidth is double the amount in the signal.
What are the applications of SSB-SC modulation?
Amplitude modulation is one way to carry information on a carrier, such as a radio signal. Another way is FM (Frequency Modulation). While FM offers greater clarity for audio, and the higher frequencies that FM use offer a wider bandwidth, allowing for more information to be transmitted, one application where FM and digital are not suitable are Aviation communication, which to this day still use AM analogue. This is because weaker signals can be heard over stronger, closer ones with AM, allowing for emergency transmissions to have more chance of being heard over other traffic. Also, AM uses a narrower bandwidth than FM, allowing more users in a smaller space. This is important for the lower frequencies of Radio, where space is at a premium (ie shortwave bands).
How does DSB SC modulation reduce power?
DSB SC (Double Sideband Suppressed Carrier) modulation reduces power consumption by eliminating the carrier wave from the transmitted signal, which typically requires a significant portion of the total power. In this method, only the sidebands, which contain the actual information, are transmitted, leading to more efficient use of power. This results in a lower average power requirement for signal transmission, making DSB SC modulation particularly advantageous for power-sensitive applications.
Why ssb is not used for broadcasting?
Single Sideband (SSB) is not typically used for broadcasting because it is more complex to demodulate than amplitude modulation (AM), requiring more sophisticated receivers. Additionally, SSB is designed for efficient point-to-point communication, where bandwidth efficiency and signal clarity are crucial, rather than for the wide coverage and simplicity desired in broadcasting. Furthermore, the majority of the public is familiar with traditional AM and FM broadcasting formats, making them more accessible for mass communication.
