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Consider a digital communication system in which the received symbol y is equal to : y = x+I+n, where n is AWGN with variant sigma_n^2, I models interference independent of both x and n and x is the data taking values +A and -A. Assume I can take on values -1/2 and +1/2 with equal probability, what is probability of error if the decision threshold is 0?
what is the probaility of error if the interference I is instead a Gaussian random variable independent of x and n, with zero mean and variant sigma_I^2?
Identify how the existence of interest groups and political parties affect the public opinions of Texans. Is this affect beneficial or hinderances to the prinicipal of local control popular in Texas policy Why
Describe how three-position control might be used to cause a windmill to always face into the wind. The windmill is rotated with a bidirectional DC motor.
If these nominal non--ideal parameters are replaced, one at a time, by A = 50000, Ri = 1 M and R0 = 150 (each of which is twice as bad as the nominal values), which parameter has the largest impact on the output voltage
Plot the Bode straight-line approximation phase plot (i.e., f(f) vs. f) for the transfer function over the range f = 10 rad/s to f = 100 krad/s using the 4-cycle semi-log graph paper provided. Label all slopes in degrees/dec and all levels in degr..
Calculate the magnetic flux density B(vector) at a point P specified in spherical coordinates. Express the answer in terms of the magnetic dipole moment m(vector) . For full credit, fill all the details and justify all the assumptions adopted.
Transfer function : key informaiton, A linear time-invariant discrete-time system is excited by the input x[n] = d[n] + 2u[n-1] (d represents δ(delta)). The resulting output response with zero initial conditions is y[n] = ((0.5)^n * u[n]). De..
If a transformer has a turns ratio of 1:5 and a primary voltage of 20 V AC, what will the secondary voltage be?
Design a load resistor (resistance rating and power rating) network to have the transformer operate at full load. Design a second network for half load. You may need to combine several resistors to get the desired value.
If an AM signal has an un-modulated carrier voltage Vc=A volts(pk) and a load resistance RL of B ohms. How to calculate the Pc (Carrier Power) If the modulation index is known as m, how to calculate the Sideband Power (Psb)
Suppose you are the supplier and can produce 20 units now but cannot start production on the second 20 units for two months. What price would you try to negotiate for the last 20 units?
A long hallway has three doors, one at each end and one in the middle. A switch is located at each door to operate the incandescent lights along the hallway. Label the switches A,B AND C. design a logic circuit network to control the lights.
A 2.4KV, single-phase circuit suppllies a load of 250KW at a lagging power factor, and the load current is 160A. If it is necessary to improve the power factor, determine the following: (a)The uncorrected poer factor and reactive load.
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