TELECOMMUNICATIONS SYSTEMS
COMMUNICATION WIRELESS COMPUTING DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Propagation delay
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Latency
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Spread spectrum
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Near field communication
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Detailed explanation-1: -A signal that is bounced off a GEO satellite takes approximately 0.22 second to travel at the speed of light from Earth to the satellite and back. This delay poses some problems for applications such as voice services and mobile telephony.
Detailed explanation-2: -Propagation delay is considered to be the time the signal takes to travel from the Earth transmitting station to the Earth Receiving station where the signal encounters an uplink and downlink way. In order to calculate the propagation delay, we have to take the light speed of into account.
Detailed explanation-3: -The transmission of signal from first earth station to satellite through a channel is called as uplink. Similarly, the transmission of signal from satellite to second earth station through a channel is called as downlink.
Detailed explanation-4: -The expected propagation delay will be a little more than 100 ms per hop.
Detailed explanation-5: -Satellites communicate by using radio waves to send signals to the antennas on the Earth. The antennas then capture those signals and process the information coming from those signals.