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an orthogonal set of signals is characterized by the property that the inner product of any pair of signals in the set
a source of information emits a set of symbols denoted bytwo candidate modulation schemes namely pulse-duration
a set of 2m biorthogonal signals is obtained from a set of m ordinary orthogonal signals by augmenting it with the
in the manchester code discussed binary symbol 1 is represented by the doublet pulse st shown in given figure and
question 1human capital is the sum of all of the following exceptskillsknowledgegeneral attributes
1 it is often stated that the process of writing a business plan is as important as the plan itself provide a rationale
given figure shows the block diagram of a phase-synchronization system determine the phase estimate of the unknown
let pei and peq denote the probabilities of symbol error for the in-phase and quadrature channels respectively of a
find the power spectral density of an offset qpsk signal produced by a random binary sequence in which symbols 1 and 0
an fsk system transmits binary data at the rate of 25 x 106nbspbitss during the course of transmission white gaussian
in section we compared the noise performances of various digital modulation schemes under the two classes of coherent
continuing with the four line codes considered in problem identify the line codes that have minimum average energy and
consider a sine wave of frequency fm and amplitude am which is applied to a delta modulator of step sized show that
in the conventional form of dm the quantizer input may be viewed as an approximate to the derivative of the incoming
alphanumeric data are entered into a computer from a remote terminal through a voice-grade telephone channel the
a black-and-white television picture may be viewed as consisting of approximately elements each of which may occupy one
1 specify the nyquist rate and the nyquist interval for each of the following signals2 discussion of the sampling
figure shows the idealized spectrum of a message signal mtthe signal is sampled at a rate equal to 1 khz using flat-top
consider a pam wave transmitted through a channel with white gaussian noise and minimum bandwidth bt 12ts where ts is
a speech signal has a total duration of 10 s it is sampled at the rate of 8 khz and then encodedthe
a pcm system uses a uniform quantizer followed by a 7-bit binary encoder the bit rate of the system is equal to 50
a a sinusoidal signal with an amplitude of 325 v is applied to a uniform quantizer of the midtread type whose output
the signalis transmitted using a 40-bit binary pcm systemthe quantizer is of the midrise type with a step size of 1v
figure shows a pcm signal in which the amplitude levels of 1v and -1v are used to represent binary symbols 1 and 0