In signal processing, the Nyquist rate is two times the bandwidth of a band limited signal or a band limited channel.
The Nyquist bit rate formula is use to calculate the theoretical maximum bit rate.
Bit rate=2*bandwidth*log2L
Where bandwidth is the bandwidth of the channel, āLā is the signal level used to represent data.
For More: https://www.princeton.edu/~achaney/tmve/wiki100k/docs/Nyquist_rate.html