Discussion
Television channels are 6 MHz. How many bits can be sent if four level digital signals are used (assume a noiseless channel)?
Answer: A
Correct answer: 24 Mbps
Nyquist's formula for a noiseless channel with four levels:
\[ C = 2B\log_{2}V = 2\times 6\times 10^{6}\times \log_{2}4 = 24\ \text{Mbps} \]
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