jens
b31f3e7435
git-svn-id: http://moon:8086/svn/matlab/trunk@153 801c6759-fa7c-4059-a304-17956f83a07c
25 lines
398 B
Matlab
Executable File
25 lines
398 B
Matlab
Executable File
% function [b,k] = fir_rc(fa, T, N, alpha)
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% Raised Cosine FIR-Filter
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function [b,k] = fir_rc(fa, T, alpha, N)
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n = -(N-1)/2:1:(N-1)/2;
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t = n/fa;
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nom = sinc(t/T).*cos(pi*alpha*t/T);
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denom = (1 - (2*alpha*t/T).^2);
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% Find zero elements
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ze = find(abs(alpha*t/T) == 0.5);
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nom(ze) = pi/4 * sinc(t(ze)./T);
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denom(ze) = 1;
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b = (nom./denom).*blackman(N)';
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k = 1 /sum(b);
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