Method of Assigning the Bandwidth to a Channel

It is proposed that channel bandwidth assignment be determined by the criterion that a prescribed fraction of the total radiated power of a system be contained within the channel. To apply this criterion to any system, its spectral distribution must be accurately known. Illustrative examples are given for this channel bandwidth computation when the output spectrum is, 1) optical (Lorentzian) shape, 2) a Gaussian distribution, and 3) an AM voice signal.