ECE :: Communication Systems
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One of the advantages of base modulation over collector modulation of a transistor class C amplifier is
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If carrier modulated by a digital bit stream had one of the possible phases of 0°, 90°, 180°, 270°, then the modulation is called.
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In FM, when the bandwidth is doubled, the signal to noise ratio improves by a factor of
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Pilot-carrier transmission is one in which
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AM-SC stands for
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On a smooth surface, the line of sight distance between transmitting antenna (height ht metres) and receiving antenna (height hr metres) is about
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In Modulation, "carrier" is
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Which one of the following blocks is not common in both AM and FM receivers?
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If the variance σx2 of d(n) = x(n) - x(n - 1) is one-tenth the variance σx2 of a stationary zero mean discrete time signal x(n), then the normalized autocorrelation function Rxx(x)/σx2 at k = 1 is
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