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Problem:
(a) Compare the different MAC schemes, namely FDMA, SDMA, TDMA and CDMA.
(b) Describe with help of diagrams the different phenomena involved in multipath propagation.
(c) Draw and explain the functions of the main components in a cellular network.
(d) What is difference between a control channel and a data channel. Describe how the control channel can be more effective for communications at time of natural disaster.
(e)
i. Describe how channel re-use and frequency re-use will increase the number of users in a cellular network.
ii. State another solution that may increase the number of users in a cell, is it cheaper than the 2 previous solutions mentioned in i?
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Q. Consider an RL series circuit excited by (a) v(t) = 20e -2t V, and (b) v(t) = 20 V. Determine the forced component of the voltage across the inductor for R = 2 and L = 2H.
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Q. What are the basic operations of MOSFET? The gate to source voltage is set to zero volts by the direct connection from one terminal to the other,and a voltage Vds is applie
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