- 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
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+% function [b,k] = fir_rc(fa, T, N, alpha)
+% Raised Cosine FIR-Filter
+
+function [b,k] = fir_rc(fa, T, alpha, N)
+
+n = -(N-1)/2:1:(N-1)/2;
+t = n/fa;
+
+nom = sinc(t/T).*cos(pi*alpha*t/T);
+denom = (1 - (2*alpha*t/T).^2);
+
+% Find zero elements
+ze = find(abs(alpha*t/T) == 0.5);
+
+nom(ze) = pi/4 * sinc(t(ze)./T);
+denom(ze) = 1;
+
+b = (nom./denom).*blackman(N)';
+k = 1 /sum(b);
+
+
+
+
+