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Assume that the allocated spectrum for a cellular system is 25 MHz in bandwidth, for a single link, and that each channel uses 200 kHz.
Also, assume that 50% of the users generate a traffic of 0.25 Erlang/user, while the other 50% generate 0.02 Erlang/user.
For cluster sizes N = 3, 4, and 7, compute the maximum number of users per cell, at blocking probability 0.02.
From what has been learned in another chapter, give a second, even more cogent reason, to speed things up ? X.25 connectivity was one alternative to interconnect LANs over long distances. What are the drawbacks of X.25 for LAN interconnectivity?
What is the frequency for a periodic signal with a period of 2.5 ns 2.5 GHz 250 MHz 4.0 GHZ 400 MHz 2. Which decimal number is equivalent to 25 10 25 31 32 3. Convert the following decimal negative numbers to their 8-bit, 2's complement formulatio..
Resize the following unsigned binary numbers to 8 bits: 01101, 111000, 0001011001, 0011110000 and 000110001001. In which cases does the result not represent the same numeric value as the original number?
Output impedance with a resistor R across the constant current source (from the collector terminal to the base terminal) With base grounded calculate -
The solutions to Schrodinger's wave equation for a particular situation is given by Psi(x) = sqrt(2/ao)*e-x/ao. Determine the probability of finding the particle between the following limits: (a) 0
The preceding example demonstrated the required amplitude response of the VSB filter. We now consider the phase response.
An unknown semiconductor has Eg = 1.1 eV and Nc = Nv. It is doped with 10^15 cm^-3 donors where the donor level is 0.2 eV below Ec. Given that Ef is 0.25 eV below Ec, calculate ni and the concentration of electrons and holes in the semiconductor ..
Calculate Is and the current I for V = 700 mV for a pn junction for which Na = 1017 / cm³, Nd = 1016 / cm³, A = 200 µm², ni = 1.5 x 10^10 / cm³, Lp = 5 µm, Ln = 10 µm, Dp = 10 cm² / s, and Dn = 18 cm² / s
A transmission line is specified by the following, while operated at omega w=6*10^8 rad/s, L'= 0.4*10^-6 H/m, C'=40*10^-12 F/m, G'=80*10^-6 S/m, and R'=20 ohms/m. Find the attenuation rate after a wave propagates 10 meters on this line.
An Ideal Low Pass Filter: The impulse response of an ideal low-pass filter is h(t) = sin(t)/t (or the sinc signal). (a) Given that the impulse response is the response of the system to an input x(t) = f(t)with zero initial conditions
The measured current, voltage and power factor of a premium-efficient, three-phase, 125-hp air compressor motor are shown in the table below. Assume motor is 95.3% efficient at all loads. Loaded Unloaded Current (Amps) 127 63 Voltage (Volts) 476 47..
A voltage of 100 VDC is applied across a resistor, and the temperature of the resistor is measured. Which of the voltage waveforms shown in the figure, when applied across the resistor, would produce that same temperature - What is the value of t..
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