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Which filter is used to detect the PAM signal?
A speech signal is sampled a rate of 20% above the Nyquist rate. The signal has a bandwidth of 10 kHz. The sample is quantized into 1024 levels and then transmitted through 8level PAM over an AWGN baseband channel. The bandwidth required for transmission is ______
Which of the following Pulse time Modulation does not exist in practice?
Study the given input signal and match the columns.
A PAM source generates four symbols 3 V, 1 V, 1 V and 3 V with probability of p(3) = p(3) = 0.2 and p(1) = p(1) = 0.3 respectively. The variance for the source will be
Consider a baseband binary PAM receiver shown below. The additive channel noise n(t) is white with power spectral density S_{N}(f) = N_{0}/2 = 10^{20} W/Hz. The lowpass filter is ideal with unity gain and cutoff frequency 1 MHz. Let Y_{t}, represent the random variable y(t_{1})
Yt = Ns if transmitted bit bk = 0
YK = a + N_{k} if transmitted bit bk = 1
where N_{k} represents the noise sample value. The noise sample has a probability density function, PN (n) = 0.5αe (This has mean zero and variance 2/α^{2}), Assume transmitted bits lo be equiprobable and threshold z is set to a/^{2} = 10^{6} V
‘The probability of bit error is
Consider a baseband binary PAM receiver shown below. The additive channel noise n(t) is white with power spectral density S_{N}(f) = N_{0}/2 = 10^{20} W/Hz. The lowpass filter is ideal with unity gain and cutoff frequency 1 MHz. Let Y_{t}, represent the random variable y(t_{1})
Yt = Ns if transmitted bit bk = 0
YK = a + N_{k} if transmitted bit bk = 1
where N_{k} represents the noise sample value. The noise sample has a probability density function, PN (n) = 0.5αe (This has mean zero and variance 2/α^{2}), Assume transmitted bits lo be equiprobable and threshold z is set to a/^{2} = 10^{6} V
Q. The value of the parameter α (in V1) is
Which of the following is NOT an advantage of Pulse Duration Modulation (PDM) recording?
23 docs263 tests

23 docs263 tests
