1. A) We can calculate the theoretical highest bit rate of a regular telephone line. A telephone line normally has a bandwidth of 4000. The signal-to-noise ratio is usually 2182.Calculate the Capacity of the channel.
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Data rate governs the speed of data transmission. A very important consideration in data communication is how fast we can send data, in bits per second, over a channel. Data rate depends upon 3 factors:
The bandwidth available
Number of levels in digital signal
The quality of the channel – level of noise
Two theoretical formulas were developed to calculate the data rate: one by Nyquist for a noiseless channel, another by Shannon for a noisy channel.
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