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In 1924 H. Nyquist derived an equation relating bandwidth and maximum data rate:
max data rate(bits/sec) = 2 * W * log2 M
where W = bandwidth and M = number of different values that can be sent.
sometimes seen as B = bandwidth and V = number of values: max data rate(bits/sec) = 2 * B * log2 V
The Nyquist formula applies to perfect noiseless channels and gives the absolute maximum speed available.
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