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4阶,32倍插值CIC
% CIC 1M->32M
data=[1;2;3;4;5;6;7;8;9];
% Comb
C1=diff([0;data]);
C2=diff([0;C1]);
C3=diff([0;C2]);
C4=diff([0;C3]);
% Interpolation and Intergrator
IQ_temp=cumsum([0;C4]);
E1=zeros(length(IQ_temp)*32,1);
for i=1:32
E1(i:32:end)=IQ_temp;
end
E2=cumsum([0;E1]);
E3=cumsum([0;E2]);
E4=cumsum([0;E3]);
data_cic=round(E4/2^15);
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