A binary PCM wave uses unipolar NRZ signaling to transmit A binary PCM wave uses unipolar NRZ signaling to transmit symbols 1 and 0; symbol 1 is represented by a rectangular pulse of amplitude A and duration Tb. The channel noise is modeled as additive, white and Gaussian, with zero means and power spectral density […]
A binary wave consists of a random sequence of symbols A binary wave consists of a random sequence of symbols 1 and 0, similar to that described in Example 1.3, with one basic difference: symbol 0 is now represented by a pulse of amplitude A volts and symbol 0 is represented by zero volts. All […]
A binary PCM system using polar NRZ signaling operates just A binary PCM system using polar NRZ signaling operates just above the error threshold with an average probability of error equal to 10-6. Suppose that the signaling rate doubled. Find the new value of the average probability of error. You may use Table to evaluate […]
Consider the following binary sequence it 10 1001100010110 100 U Consider the following binary sequence it 10 1001100010110 100 Use the LempelâZiv algorithm to encode this sequence. Assume that the binary symbols 0 and 1 are already in the codebook.
Consider the frequency demodulation scheme in Figure in which Consider the frequency demodulation scheme in Figure in which the incoming FM signal s (t) is passed through a delay line that produces a phase-shift of p/2 radians at the carrier frequency A?c. The delay-line output is subtracted from the incoming FM signal, and the resulting […]
Sketch the PM and FM waves produced by the saw Sketch the PM and FM waves produced by the saw tooth wave shown inFigure.
A convolutional encoder has a single-shift register with two sta A convolutional encoder has a single-shift register with two stages, (i.e., constraint length K = 3), three modulo-2 adders, and an output multiplexer. The generator sequences of the encoder are as follows: g(1) = (1, 0, 1) g(2) = (1, 1, 0) g(3) = (1, […]
Suppose that in the receiver of the quadrature-carrier Suppose that in the receiver of the quadrature-carrier multiplex system of Figure b, the local carrier available for demodulation has a phase error F with respect to the carrier source used in the transmitter and receiver, show that this phase error will cause cross-talk to arise between […]
Suppose that in a baseband M-ary PAM system with M Suppose that in a baseband M-ary PAM system with M equally likely amplitude levels, as described in Probl Specify the Nyquist rate and the Nyquist interval for each of the following signals: (a) g (t) = sinc (200t) (b) g (t) sinc2 (200t) (c) g […]
Suppose that in a baseband M-ary PAM system with M Suppose that in a baseband M-ary PAM system with M equally likely amplitude levels, as described in Problem 4.27, the average probability of symbol error Pe is less than 10-6 so as to make the occurrence of decoding errors negligible. Show that the minimum value […]