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(Carrierless amplitude-phase modulation (CAP)) We have seen how to modulate a baseband QAM waveform up to passband and then demodulate it by shifting down to baseband, followed by filtering and sampling. This exercise explores the interesting concept of eliminating the baseband operations by modulating and demodulating directly at passband. This approach is used in one of the North American standards for asymmetrical digital subscriber loop (ADSL).
(c) Suppose that is now sent over a communication channel. Suppose that the received waveform is filtered by a Hilbert filter before going through the demodulation procedure above. Does the scheme still work?
Plot the ground level concentration of sulfur dioxide as a function of distance from the stack and determine the maximum ground level concentration at both with and without air pollution control and the distance from the stack where the maximum co..
What horizontal acceleration α0 should be given to the plate so that the absolute acceleration of the slider will be vertically down? What is the value of the corresponding force R exerted on the slider by the slot?
Given the initial effective stress state at a point within a soil mass (s_y=2.5 daN/cm2, s_x=1.5 daN/cm2, t_xy=t_xy=0.4 daN/cm2) and effective soil shear strength parameters at the same point (friction angle=30 degrees, cohesion=0.5 daN/cm2)
An afterburner has been selected to destroy 99.9% of the ethane (CH3-CH3)in a gas (mostly air) stream . if the residue time is 0.8 seconds and the pressure is 1.1 atmospheres in the after burner,
Estimate the average hourly, average daily, and minimum hourly residential sewage flows from an area serving a population of 1500 people. Assume that the lenghth of sewer and house drains equals 3.0 km and that infiltration occurs
In an otto cycle the temperatures at the beginning and end of compression are 43degreesC and 323degreesC respectively, calculate the air standard efficiency and the compression ratio. Take y to be 1.4 ?
A lake with a surface area of 1050 acres was monitored over a period of time. During a one month period, the inflow was 33 cfs, the outflow was 27 cfs, and a 1.5 in seepage loss was measured.
Does the mass of every molecule in the mixture equal the apparent molar mass?
When theta=0 degrees , the assembly is held at rest, and the torsional spring is untwisted. If the assembly is released and falls downward, determne the angular velocity at the instint theta=90.
The vehicle has a frontal cross -sectional area of 1.9 m^2. The roadway has a straight alignment and a badly patched and broken asphalt surface. assume a drag coefficient of 0.3 and p of air of 1.29 kg/m^3
Neon gas at 50 degrees C in a vertical cylinder of diameter 150 mm has a 6 kg frictionless piston mounted. The outside pressure is 98kPa and the neon volume is 4000cm^3. Find the mass of neon.
Describe the breakthrough curve you would expect for transport of a non-reactive solute injected as a finite pulse of duration 1 hour in a designed steady stat
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