State Hartley’s law and Shannon Hartley’s theorem.
Hartley’s law
The amount of information that can be sent in a given transmission is dependent on the bandwidth of communication channel and the duration of transmission.
OR
Hartley’s theorem state that if the bandwidth of a transmission channel is “B” which carries a signal having “L” number of levels, then the maximum data rate “R” on this channel is given by :
Shannon’s Hartley theorem: The channel capacity of a white, band limited Gaussian channel is given by,
Where, B = Channel Bandwidth S = Signal Power N = Noise within the channel bandwidth