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Consider a point-to-point radio link between two highly directional antennas in a stationary environment. The antennas have antenna gains of 30 dB, distance attenuation is 150 dB, and the receiver has a noise figure of 7 dB. The symbol rate is 20 Msymb/s and Nyquist signaling is used. It can be assume that the radio link can be treated as an AWGN channel without fading. How much transmit power is required (disregarding power losses at transmitter and receiver ends) for a maximum BER of 10-5, when using:
a) Coherently detected BPSK
b) Coherently detected FSK
c) Differentially detected BPSK
d) Non-Coherently detected FSK
A Mealy sequential network has two inputs and one output. Whenever the input sequence 00, 10, 01, or 10, 01, 11 occurs the output is 1 coincident with the last input in the sequence. Find a state graph and table.
1. There are 4 main classes of network topologies, what are they 2. In communications over a network, protocols are required. What is the framework or reference model that makes this possible
Calculate β for two transistors for which α=0.99 and 0.98. For collector currents of 10 mA, find the base current of each transistor.
Choose all components, both active and passive needed. Foractive devices, show the pinouts. Your report should include 1 or 2 paragraphs on yourdesign, a schematic, and all design parameters needed (such as power supply voltages).
The analog signal cos (200t) is digitized using a sampling frequency of 300 Hz, and a quantization of 8 bits per sample. How many bits will be used to store 2 minutes of the digital signal
If it is possible to determine whether a circuit is in resonance given only the RMS values, explain how it could be done. If it is not possible, explain what further information you would have to have.
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.
Considering a three phase delta connected synchronous machine, the terminal line-line voltage is 1 p.u, the stator leakage inductance is 0.2 p.u, ignore the stator winding resistance, the rotor wind current is adjusted by a dc voltage source with ..
If Nand gates are used throughoutand a ripple-carry design is used, calculate the delay through the adder, assuming all inputs are presented at the same instant, and counting D seconds per gate. Which output signal suers the worst delay.
Two men are sliding a 100-kg crate up an incline. If the lower man pushes horizontally with a force of 500 N, and if the coefficient of static friction is 0.30, determine the tension T which the upper man must exert on the rope to get the crate to..
A silica fiber has an outer diameter of 125 micrometers. What is the total volume of silica for a 1km length? This fiber is wound on a spool whose unloaded diameter is 20 cm. The spool height is 10 cm. Compute the diameter of the fully loaded s..
what are the octal values of the four 8-bit bytes in the 32-bit number with octal representation 321076543218
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