Call hand-off is the process in which a call in progress is transferred from a radio channel of a cell site to a radio channel of another cell as a mobile phone user moves from one cell to another.
Frequency reuse is the process in which the same set of carrier frequencies are used in different cells that are geographically separated.
With a diagram, explain the operation of a communication satellite system.
Satellite acts as a relay station for earth sources. A transmission station sends the information to the satellite, which in turn retransmits to the receiving stations.
The original signal being transmitted from the earth station to the satellite is called uplink of 6 GHz The retransmitted signal from the satellite to the receiving station is called downlink of 4 GHZ frequency. Transponder is the transmitter-receiver combination in a transponder.
