Question

Five earth stations share one transponder of a satellite.The speech signals are sampled at 8khz ,using 8bits/sample.the samples are multiplexed into 40mbps stream,the number of speech signals that can be sent by each earth station are?
Can anyone help me with the solution?

Answer 1

The total stream (40 mbps) has to be shared among the five stations so that each one has a stream of (...) bps.
Each speech channel has 8kHz sampling, each sample having 8 bits of info, so one speech channel has a bit rate of (....) x (....) = (....)
Now just find a relation to calculate how many speech signals can be located in a single ground station's stream.