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Question:
a) An antenna is an electrical conductor or system of conductors that sends and receives radio signals. Explain the omni-directional and the directional antennas.
b) Radiations after leaving an antenna are propagated by using one of the three modes of propagation. List down and explain the different signal propagation behaviours that radio waves exhibit.
c) Explain two major differences between the first generation and second generation of cellular based mobile systems?
d) Describe the following subsystems that form part of the GSM (Global System for Mobile Communication) architecture:
i. Radio Subsystem ii. Network and Switching Subsystem iii. Operational Subsystem
e) GPRS (General Packet Radio System) is considered as a transition phase from 2G to 3G. Describe the main characteristic that differentiates GPRS with GSM?
f) Briefly explain the main features of a popular fourth generation system.
analyse modelling for safe home security system
draw diagonal scale of rf 1/500 and show 57.5m on it
Where do you think by DJIA? Nobody knows the respond to this one. However, you should at least have some ideas on the topic and be able to communicate why you think this is the
EL DESPLAZAMEINTO DE UNA PARTICULA ESTA DADO POR S=(-2+3T)e¨-0.5t
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Inhibit Gate Occasionally it is required to 'hold' one input to an AND gate at a particular logic level in order to disable the entire gate. One method of representing this sy
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