- added

git-svn-id: http://moon:8086/svn/matlab/trunk@153 801c6759-fa7c-4059-a304-17956f83a07c
2021-03-22 20:28:22 +00:00
parent 1b5742e13e
commit b31f3e7435
140 changed files with 6054 additions and 0 deletions
@@ -0,0 +1,25 @@
+% [h] =fir_rc(Fa,Tsym,Alpha,N)
+function [b,k,delay] =fir_rc(fa,Tsym,Alpha,N)
+
+if rem(N,2),
+   delay = (N-1)/2;
+else
+   delay = N/2;
+end
+
+n = ((0:N-1)-delay)/fa;
+
+ind1 = find(abs(abs(4.*Alpha.*n./Tsym) - 1.0) > sqrt(eps));
+if ~isempty(ind1),
+	nind = n(ind1);
+	b(ind1) =  sinc(2.*nind./Tsym)./fa   ...
+		.* cos(2.*pi.*Alpha.*nind./Tsym) ...
+		./ (1.0 - (4.*Alpha.*nind./Tsym).^2);
+end
+
+ind = 1:length(n);
+ind(ind1) = [];
+b(ind) = Alpha ./ (2.*fa) .* sin(pi ./ (2.*Alpha));
+
+b = 2.*b./Tsym;
+k=0.5*fa*Tsym;