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For what fraction of the cycle does the diode conduct? What is the average output voltage? What is the average current in the load?
Specify the rms voltage that must appear across the transformer secondary. Calculate the average current through the diode during conduction.
Modern communication technology has brought us Internet connectivity just about anywhere on the planet. One very useful tool has been WiFi on airplanes
Determine the lattice filter and its optimum reflection coefficients corresponding to the linear predictor in Problem
Determine and sketch the envelope (group) delay of the filter as a function of frequency.
Determine the frequency-response characteristic of the transmitting and receiving filters that yield zero ISI at a rate of 1/T symbols/s.
Determine the (magnitude) frequency-response characteristic of the optimum transmitting and receiving filters.
If it is further assumed that, on the same channel, a BPSK scheme is employed with hard decision decoding, what will be the minimum required channel .
Determine the system function G(s) and express the time constants t1 and t2 in terms of the circuit parameters.
Determine the closed-loop transfer function H(s) and its gain at f = 0.
Determine the value of the output of the matched filter at the sampling instant t = nTc.
A Hadamard matrix is defined as a matrix whose elements are ±1 and whose row vectors are pairwise orthogonal.
What is the best power allocation strategy by the transmitter,what is the optimal decision rule at the receiver, and what is the resulting error probability?
Suppose the signal s(t) is passed through a correlator that correlates the input s(t) with s(t).
Suppose that this signal is corrupted by AWGN, which is represented by its equivalent lowpass form z(t).
When the additive noise at the input to the demodulator is colored, the filter matched to the signal no longer maximizes the output SNR.
By how many decibels does this system underperform a binary antipodal signaling system with the same eb/N0 ?
Plot the constellation, and using the constellation, find the energy in each signal. What is the average signal energy and what is Ebavg?
From this result, determine the additional transmitted energy required in the 8-PSK signal to achieve the same error probability as the four-phase signal.
Determine the power spectral density of the transmitted signal s(t), assuming that the carrier frequency is f0 (assuming f0 >> 1/T ).
The two noises n1 and n2 are arbitrary- not necessarily Gaussian, and not necessarily independent.
Determine the optimum detector for an AWGN channel and the optimum threshold, assuming that the signals are equally probable.
If the signals are equiprobable, express the error probability of the optimal detector in terms of the average SNR per bit.
Suppose that binary PSK is used for transmitting information over an AWGN with a power spectral density of ½ N0 = 10-10 W/Hz.