Dear candidates you will find MCQ questions of Communication Engineering here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Explanation: spectrum allocated to each cellular operator is 12.5 mhz. as bt = nbc + 2bguard; which is equal to 416*30*103+2(10*103) = 12.5 mhz.
Explanation: tdma systems transmit data in a buffer and burst method. thus, the transmission for any user is not continuous.
Explanation: guard times are utilized to allow synchronization of the receivers between different slots and frames.
Explanation: tdma share a single carrier frequency with several users, where each user makes use of non-overlapping time slots. the number of time slots per frame depends on several factors, such as modulation technique, available bandwidth etc.
Explanation: because of discontinuous transmissions in tdma, the handoff process is much simpler for a subscriber unit, since it is able to listen for other base stations during idle time slots.
Explanation: high synchronization overhead is required in tdma systems because of burst transmissions. tdma transmissions are slotted, and this requires the receivers to be synchronized for each data burst.
Explanation: tdma has an advantage that it can allocate different numbers of time slots per frame to different users. thus, bandwidth can be supplied on demand to different users by concatenating or reassigning time slots based on priority.
Explanation: efficiency of tdma system is a measure of the percentage of transmitted data that contains information as opposed to providing overhead for the access scheme.
Explanation: if data is transmitted at 270.833 kbps in the channel, the time duration of a bit will be 3.692 μs, as tb = (1/270.833 kbps) = 3.692 μs.
Explanation: a us digital cellular system based on cdma was standardized as interim standard 95 (is-95). it was standardized by us telecommunication industry association (tia) and promised increased capacity.
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