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consider a communication channel corrupted by noise. let X bethe value of the transmitted signal and Y be the value of thereceived signal. assume that the conditional density of Y given(X=x) is Guassian, that is, fy/x(y/x)=1/√2πσ*σexp(-(y-x)squared/2σsquared).and x is uniformly distributed on[-1,1].what is the conditional probability density of X given Y (i.e fx/y(x/y)?)
The axis of the cylinder is along the z axis, and the electrons are moving with a velocity vector v in the positive z direction. The velocity of the electrons is 0.1c where c is the speed of light (2.99792458 ´ 108 [m/s]). The magnitude of the cur..
A semiconductor, in thermal equilibrium, has a hole concentration of p0 = 2x1016 cm-3. The minority carrier life time = 3x10-7 s. (Assume, ni = 1010 cm-3)
Assuming the resistance versus temperature function to be linear, determine the expected resistance of the material at 0 degrees celcius( the freezing point of water) and at 100 degrees celcius (the boiling point of water)
using 25 nF capacitors and ideal op-amps, design a high pass unity gain butterworth filter with a cut off fq of 10 kHz and a gain of at least -25dB at 5kHz.
An electric heater draws an average power of 1100 Watts when plugged into a 110 V-rms outlet. Calculate the resistance of the heater and the rms current.
The fermi energy level for a particular T = 300K is 6.25 eV. The electrons in this material follow the Fermi-Dirac distribution function. (a) Find the probability of an energy level at 6.50 eV being occupied by an electron.
Show and explain how you could make a 2-bit counter that will count up or down on an external control signal. Explain the difference between the input and output times.
Determine the fundamental frequency w0, the period t0, and the coefficients in the representation X(t) = x0 + Re{k=1N Xkejkwot} for the above input. Remember, you can do this problem without evaluating any integrals.
a) What is the key difference between coherent and non-coherent demodulation b) Explain the concept of differential encoding for BPSK modulation.
Two free particles (that is, free to move) with charges +1µC and +3µC are a distance L = 2m apart. A third charge is placed so that the entire system is in equilibrium. Find the location, magnitude, and sign of the third charge.
A circular loop TV antenna with 0.02 m2 area is in the presence of a uniform amplitude 550 MHz sinosoidal signal. When oriented for maximum response, the loop develops an emf with a peak value of 30 mV.
Find the charge q as a function of time for the electrical circuit described. Assume that q(0) = 0 and q'(0) = 0 R = 20, C = 0.02, L = 2, E(t)=35 q"+R/L q'+1/LC q=1/L E(t) where R is resistance (in Ohms), C is capacitance (in Farads)
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