The Shannon-Hartley theorem defines the maximum rate at which information can be transmitted over a communications channel of a specified bandwidth in the presence of noise. The formula is: $C=B{\log }_2(1+SNR)$ where $C$ is the channel capacity, $B$ is the bandwidth, and $SNR$ is the Signal-to-Noise Ratio ($S/N$). Increasing either the bandwidth or the $SNR$ directly increases the link's theoretical data capacity.