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Suppressed carrier single sideband amplitude modulation - SCSSBAM.
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Which modulation technique is used in gsm?
GSM uses GMSK modulation scheme. GPRS also uses GMSK modulation scheme. EDGE and UMTS uses 8-PSK.
Am single-sideband full carrier?
single sideband full carrier
What is the need of digital modulation scheme?
The aim of digital modulation is to transfer a digital bit stream over an analog bandpass channel, for example over the public switched telephone network (where a filter limits the frequency range to between 300 and 3400 Hz) or a limited radio frequency band.
What are the advantages and disadvantages of double sideband suppressed carrier modulation?
Amplitude modulation of a carrier results in a transmitted signal consisting of the carrier, plus an 'upper sideband' and a 'lower sideband', spaced above and below the carrier frequency by the frequency of the modulation.The bandwidth of the whole signal is double the modulation frequency. Also, the power in the carrier is constant, and power must be added in order to radiate the sidebands.All the receiver needs in order to extract the information from the signal is one complete sideband, and knowledge of the frequency and phase of the carrier. Economically speaking, the carrier is wasted power, and the other sideband is wasted power andwasted spectrum.If you can filter away one of the sidebands before transmission, then you save half of the occupied spectrum, and the receiver has everything it needs to decode the signal. If you can also filter away the carrier ... or at least knock it way down ... before transmission, you can save a lot of power and use it for the remaining sideband, which extends your range for a given amount of power. The receiver still has everything it needs, as long as it can pick up a sniff of carrier ... enough to derive the carrier frequency and phase.This mode is known as "Single Sideband Suppressed Carrier". It's exactly how the video portion of standard NTSC analog TV was transmitted, throughout all of human history until June 2009.
Distinguish between logical data independence and physical data independence?
logical data : refer to the immunity of the external scheme towards changes in the conceptual scheme.physical data: refer to the immunity of the conceptual scheme towards changes in the internal scheme.
Which analog modulation scheme requires minimum transmitted power and minimum channel bandwidth?
ssb modulation scheme
Which modulation technique is used in gsm?
GSM uses GMSK modulation scheme. GPRS also uses GMSK modulation scheme. EDGE and UMTS uses 8-PSK.
What is the unit for modulation index?
Modulation index is also called as Modulation depth. The modulation index of a modulation scheme describes by how much the modulated variable of the carrier signal varies around its unmodulated level.
Am single-sideband full carrier?
single sideband full carrier
What has the author S Ancis written?
S Ancis has written: 'Scheme modulations' -- subject(s): Modulation (Music)
What is a prescribed minimum benefit?
Prescribed Minimum Benefit refers to a set of defined assistance to warrant that all medical scheme members have contact with minimum health services. This was introduced in the Medical Scheme Act.
What is the minimum number of points one requires to redeem a voucher on the Sainsbury's Nectar Card scheme?
Sainsbury's gives you the ability to buy vouchers in multiples of å£2.50. Since every 500 points gives you å£2.50, the minimum number of points one requires to redeem a voucher on the Sainsbury's Nectar Card is 500 points.
Orthogonal Frequency Division Multiplexing is a multi-carrier modulation scheme The data is?
Split up among several closely spaced subcarriers.
What is the typical drawback of AM scheme over DSB-SC modulation scheme?
The trick is the SC...Suppressed Carrier. In this scheme, only the sidebands are emitted, and in order to demodulate, the carrier must first be re-inserted. This has to be done accurately, or the resultant audio will be garbled...it's called "Monkey Talk."
Define constellation diagram and its role in analog transmission?
A constellation diagram is a representation of a signal modulated by a digital modulation scheme such as quadrature amplitude modulation or phase-shift keying. It displays the signal as a two-dimensional scatter diagram in the complex plane at symbol sampling instants. In a more abstract sense, it represents the possible symbols that may be selected by a given modulation scheme as points in the complex plane. Measured constellation diagrams can be used to recognize the type of interference and distortion in a signal.By: ISRAFIL CSE
What is the minimum number of years of service for UGC teachers for voluntary retirement scheme?
20
What is the need of digital modulation scheme?
The aim of digital modulation is to transfer a digital bit stream over an analog bandpass channel, for example over the public switched telephone network (where a filter limits the frequency range to between 300 and 3400 Hz) or a limited radio frequency band.
