jens
792f9c50f8
git-svn-id: http://moon:8086/svn/matlab/trunk@33 801c6759-fa7c-4059-a304-17956f83a07c
39 lines
858 B
Matlab
39 lines
858 B
Matlab
function timing_coarse_eval(x)
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N = 1024;
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Ng = 256;
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L = Ng;
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RCWIN_ROLLOFF = 0.125;
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[rcwin Nt wng] = txwin_eval(N, Ng, RCWIN_ROLLOFF);
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% RC Windowing at TX
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% Calculate merged CP'
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% -----------------------------------------------
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% | CP | : : | CP | : : | CP |
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% ----------------------------------------------------> nt
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% x0 x1 x2
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%
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% CP' = x0 * (1-w) + x2 * w
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k = 1;
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for nt=N+Ng:8*(N+Ng),
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for d=1:3,
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Nd = N-2+d;
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x0 = x(nt-Nd+1:nt-Nd+L);
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x1 = x(nt+1:nt+L);
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x2 = x(nt+Nd+1:nt+Nd+L);
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xcps = x0 .* (1-wng') + x2 .* (wng');
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n = 0.5*(abs(x1).^2 + abs(xcps).^2);
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c(k, d) = sum(abs(x1 .* conj(xcps)) - 1.0*n);
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end
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k = k + 1;
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end
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[v1, n1] = max(c);
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[v2, n2] = max(v1);
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n = mod(n1(n2)-1, N+Ng)
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figure(1);
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plot(0:length(c)-1, 1-abs(c)); grid;
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