ECE :: Communication Systems
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Assertion (A): In AM carrier component remains constant in amplitude and frequency.
Reason (R): In AM the two side bands are images of each other.
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In tape recorders the hissing noise is due to irregularities in magnetic coating on tape.
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Waves travel on each of the line configurations in figure. In which case would the radiation be maximum
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The main advantage of TDM over FDM is
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In FM reception, amplitude disturbances due to static change
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Consider the following differences between QPSK and MSK
- The side lobes in MSK are relatively much smaller in comparison to the main lobe
- The spectrum of MSK has a main centre lobe which is 1.5 times as wide as the main lobe of QPSK
- The waveforms of both MSK and QPSK exhibit phase continuity
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As per Hartley law
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The speeds used in recording audio programs in house hold recorders are
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During transmission over a communication channel, bit errors occur independently with probability P. If a block of n bits is transmitted, the probability of at most one bit error is equal to
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