The capacity of a band-limited additive white Gaussian noise (AWGN) channel is given by $$C = W{\log _2}\left( {1 + \frac{P}{{{\sigma ^2}W}}} \right)$$     bits per second (bps), where W is the channel bandwidth, P is the average power received and σ² is the one-sided power spectral density of the AWGN.
For a fixed $$\frac{P}{{{\sigma ^2}}} = 1000,$$   the channel capacity (in kbps) with infinite bandwidth $$\left( {W \to \infty } \right)$$  is approximately