ECE :: Communication Systems
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In AM receiver the oscillator frequency is
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The modulation index of an AM wave is measured using a CRO. The waveform is as shown in figure, the modulation index is nearly
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A three stage telephone switching structure is to have 128 input and 128 output terminals. It has been found that at peak time the utilization probability is 0.1. The number of intermediate links required for non-blocking configuration is 15. If the actual number of intermediate links is 5, the probability of blocking of call is
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In pulse code modulation, if the signal is sampled at the rate of f and the number of pulses in one code group is p, then the number of pulses per second will be
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A narrow band FM does not have the following feature
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When number of quantization levels are two, then the average transmission power in NRZ polar signalling is __________ that of NIRZ unipolar signalling.
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In telecast
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A pulse width signal can be governed by
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In MTI radar, clutter means
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