Citation
Abstract
This article determines the wideband capacity limit for noncoherent Gaussian channels which are constrained to radiate signals with peak power equal to the average power. The capacity is a function of only two parameters, the predetection signal-to-noise ratio ST/N, and the number of signals M. It is shown that the capacity increases monotonically to a wideband limit as M increases. The role played by this limit for noncoherent Gaussian channels is similar to that played by the famous Shannon limit, S/N,, for coherent channels. Numerical and graphical results are presented for parameters of interest. It was found that an excellent approximation to the wideband noncoherent limit is S/N, + ST/N,/(2 + ST/N,).
Details
- Volume
- XVIII
- Published
- December 15, 1973
- Pages
- 85–93
- File Size
- 696.6 KB