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The expression given in Problem for (S0/N0)PCM is plotted for a sinusoidal message in Figure to show the performance curves for a PCM system using a polar waveform.
(a) Comment on the threshold effect.
(b) For the polar system of Problem, with Nb = 8 and ( Si /Ni )PCM = 32, determine whether the systemnoise has signi?cant effect on performance.
Suppose that the x rays are emitted from a focal spot isotropically. The photon flux is 3.28 x 10 6 photons mm -2 sec -1 at a distance of 0.75 m from the focal spot. What is the
1. Why must a modem be used to transmit binary data through a PSTN? (1) Use sketches and additional text to describe the following modulation methods. (a) Amplitude shift key
Q. What do you mean by Transconductance? The control that the gate voltage has over the drain current is measured by transconductance and is similar to the transconductance of
Discuss the requirement for automatic gain control in AM receiver and automatic frequency control in FM. How are these 'control' voltage formed and used?
Q. What do you mean by Frequency response? Now let us examine the response of a circuit to a sinusoidal source, called an oscillator, whose frequency can be varied.Known as the
Q. Three loads in parallel are supplied by a single phase 400-V, 60-Hz supply: Load A: 10 kVA at 0.8 leading power factor Load B: 15 kW at 0.6 lagging power factor Load C:
Merits and Demerits of Stepper Motor Followings are the merits and demerits of stepper motors. Merits : a.They are compatible with digital systems b.For the co
Explain the effect of temperature on the resistivity of conducting materials. The resistance of most metals rises with rise of temperature whereas that of semiconductors and el
Write a control word for counter 1 of 8253 / 8254 that selects the following options: load least significant byte only, mode 5 of operation and binary counting. Then write an ins
write a c program for suggler message decoder
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