function noise=noisecu(N);%NOISECU Analytic complex uniform white noise.%	NOISE=NOISECU(N) computes an analytic complex white uniform%	 noise of length N with mean 0.0 and variance 1.0. %%	Examples :%	 N=512;noise=noisecu(N);mean(noise),std(noise).^2%	 subplot(211); plot(real(noise)); axis([1 N -1.5 1.5]);%	 subplot(212); f=linspace(-0.5,0.5,N); %	 plot(f,abs(fftshift(fft(noise))).^2);%		%	See also RAND, RANDN, NOISECG.%	O. Lemoine, June 95/May 96 - F. Auger, August 95.%	Copyright (c) 1996 by CNRS (France).%%	------------------- CONFIDENTIAL PROGRAM -------------------- %	This program can not be used without the authorization of its%	author(s). For any comment or bug report, please send e-mail to %	f.auger@ieee.org if (N <= 0), error ('The signal length N must be strictly positive' );end;MatlabVersion=version; MatlabVersion=str2num(MatlabVersion(1));% I hope that future Matlab versions will be more compatibleif (MatlabVersion==4), rand('uniform');elseif (MatlabVersion>5), error('unsupported matlab version. please send an email.'); end;if N<=2, noise=(rand(N,1)-0.5+j*(rand(N,1)-0.5))*sqrt(6); else noise=rand(2^nextpow2(N),1)-0.5;endif N>2, noise=hilbert(noise)/std(noise)/sqrt(2); noise=noise(length(noise)-(N-1:-1:0));end