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Let consider the wireless cellular systems with cluster size N=19.
1.Find the co-channel reuse ratio.
2.If the number of total duplex channels is 600, with the bandwidth of 60 kHz each (in duplex)
a)find the single cell capacity.
b)find the total bandwidth required for wireless system
3.Find the signal-interference ratio in dB when omnidirectional antenna is used and the propagation coefficient n =3.
4.Find the signal-interference ratio in dB when 120-sectoring antenna is used and the propagation coefficient n =3.
5.If a cluster is replicated 10 times within the system, find the total number of users that can be served with this wireless cellular system
Visible light has wavelengths from 400 to 700 nm in a vacuum. a. What is the range of frequencies b. For visible light in water, what is the range of wavelengths
Let X denote the number of accepted circuits. Let Y be a random variable which is 1 if the last (Nth ) IC was accepted and is zero otherwise (it is a Bernoulli random variable). (a) Write out the probability mass function (PMF) of X.
DC supply=18v Motor Noload speed=9,000RPM 018V ton=40% -60% in 10ms in 5 steps a) Calculate B for each of the 5 steps b) calculate Vavrage over 10ms c)calculate no load speed d)draw a linear graph including the 5 steps over 10ms
Experiment by changing the amplitudes of the modulating tones, and by adding a third tone to the modulating signal. First establish what you expect , then confirm by computer simulation.
A silicon diode has a doping profile such that ND = ax3. What is the depth of the junction assuming the p side is uniformly doped with NA per cubic cm. Assume the x origin is at an ideal ohmic contact on the n side of the diode.(assume T=300K).
It is required to use a peak rectifier to design a dc power supply that provides an average dc output voltage of 15 V on which a maximum of 1-V ripple is allowed. The rectifier feeds a load of 150 ohm.
Design and sketch a current source that delivers 1uA to a load. The sum of all resistors used should be
The variables are provided as high (1) and low (0) levels for digital control. An alarm should be initiated whenever any of the following occur: a. Speed is low; both weight and loading rate are high.
A 4KHz audio signal is transmitted by using a PCM system and the quantization level, L is 256. Find transmission bit rate.
Design a synchronous counter with a count sequence of all prime numbers between 3 and 15. Give the excitation equations. Map any unused counter states into the state whose output is the largest prime number output by this counter q.
A certain 11 V dry-cell battery, completely discharged, requires a current of 100 mA for 1.2 hr to completely recharge. What is the energy storage capacity of the battery, assuming the voltage does not depend on its charge status?
In a circuit, the generator voltage varies in time, where the amplitude of e max= 1.2 volt and emf freq.= 0.5 Hz , which the max current is equal to the max current when the freq. of emf = 3.0 Hz, which is .00033 A.
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