jiangx
20d52e1953
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5910 818b1a75-f10b-46b9-bf7c-635c3b92a50f
14 lines
498 B
Matlab
14 lines
498 B
Matlab
function sigt = ofdm_mod(sigf,amp)
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[Nant,Nsymb,Nsub] = size(sigf);
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sigt = zeros(Nant,Nsymb*640);
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for i=1:Nsymb
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symbol=squeeze(sigf(:,i,:));
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% insert zero subcarriers
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symbol=cat(2,zeros(Nant,1),symbol(:,1:150),zeros(Nant,210),symbol(:,151:301));
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% ofdm modulation
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symbol_t=ifft(symbol,512,2);
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% Adding cycl. prefix making the block of 640 elements
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symbol_cp = cat(2,symbol_t(:,end-127:end), symbol_t);
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sigt(:,(1:640)+(i-1)*640)=floor(amp*symbol_cp);
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end
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