% -*- texinfo -*- % @deftypefn {Function File} {@var{y} =} awgn (@var{x},@var{snr}) % @deftypefnx {Function File} {@var{y} =} awgn (@var{x},@var{snr},@var{pwr}) % @deftypefnx {Function File} {@var{y} =} awgn (@var{x},@var{snr}, @var{pwr},@var{seed}) % @deftypefnx {Function File} {@var{y} =} awgn (@var{...}, '@var{type}') % % Add white Gaussian noise to a voltage signal. % % The input @var{x} is assumed to be a real or complex voltage signal. The % returned value @var{y} will be the same form and size as @var{x} but with % Gaussian noise added. Unless the power is specified in @var{pwr}, the % signal power is assumed to be 0dBW, and the noise of @var{snr} dB will be % added with respect to this. If @var{pwr} is a numeric value then the signal % @var{x} is assumed to be @var{pwr} dBW, otherwise if @var{pwr} is % 'measured', then the power in the signal will be measured and the noise % added relative to this measured power. % % If @var{seed} is specified, then the random number generator seed is % initialized with this value % % By default the @var{snr} and @var{pwr} are assumed to be in dB and dBW % respectively. This default behaviour can be chosen with @var{type} % set to 'dB'. In the case where @var{type} is set to 'linear', @var{pwr} % is assumed to be in Watts and @var{snr} is a ratio. % @end deftypefn % @seealso{randn,wgn}

- wgn %

- comms %

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