COMPUTER NETWORKS AND COMMUNICATIONS
WIRELESS COMMUNICATION TECHNOLOGIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Two base station operating in samefrequency band
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Leakage of energy signals by noncellular systems into cellular frequencyband
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Two calls in progress in nearby mobilestations
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All the above
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Detailed explanation-1: -Sources of interference includes another mobile in the same cell, a call in progress in neighbouring cell, other base stations operating in the same frequency band, or any non-cellular system which inadvertently leaks energy into the cellular frequency band.
Detailed explanation-2: -The main source of interference in cellular systems is frequency reuse, where frequencies are reused at spatially separated locations to increase spectral efficiency.
Detailed explanation-3: -The two most common causes of interference are transmitters and electrical equipment.
Detailed explanation-4: -Co-Channel Interference (CCI) The interference caused by transmitting at the same frequency by two or more wireless systems is known as co-channel interference. In order to handle huge number of calls with limited number of channels frequency reuse concept is applied to the cellular system.
Detailed explanation-5: -A cell is a geographical area covered by the frequency emitted by a base station in a cellular network. The elements that transmit this frequency is called a cell site.