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Questions on bandwidth of digital communincation channels

Problem 1:

A digital signaling system is required to operate at 9600 bps. If a signaling element encodes a 8-bit word, what is the minimum required bandwidth of the channel?

Problem 2:

A given modem represents eight bits with each signaling element. How many different signaling elements are required? What would be the minimum channel bandwidth required to support 56 kbps?

Problem 3:

Consider a communications channel with a passband of 1700 Hz to 15 kHz. A modem will be connected to this communications channel and the modem will operate with a signaling rate that is forty percent (.4) the maximum allowable signaling rate for this communications channel. The modem uses the modulation technique of 128-PSK. What is the data rate (in bits per second) of this modem?

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Electrical & Electronics, Engineering

Category:- Electrical & Electronics
Reference No.:- M9418949

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