how to perform frequency shift or frequency correction in simulation using HDL NCO and LOOKUP table(LUT) in order to generate HDL code
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Fayaz
el 8 de Jul. de 2023
Respondida: Kranti Balaga
el 9 de Jul. de 2023
for the below mentioned exponential part contain code,
% 5MHz carrier
fs = 7.68;
tdw=LTE5_3_1.waveform;
%% SHOLDER REMOVING
shape5_out = conv(tdw,shape5);
%% UPSAMPLING AND LOW PASS FILTERING
fs3 = 491.52;
up5_out = interp(shape5_out,64);
%% NCO operation
fc4 = 40; %shift by 40 Mhz
for ii = 1:length(up5_out)
carr_1shifted(ii) = up5_out(ii).*exp(1i*2*pi*fc4/fs3*ii);
end
data_complex = complex(real(up5_out), imag(up5_out));
complex_timeseries = timeseries(data_complex);
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