1% [email protected] 2 3function single_carrier_gen(carrier_freq, num_iq) 4if exist('carrier_freq', 'var')==0 || isempty(carrier_freq) 5 carrier_freq = 1e6; 6end 7 8if exist('num_iq', 'var')==0 || isempty(num_iq) 9 num_iq = 512; 10end 11 12sampling_rate = 20e6; 13sampling_time = 1/sampling_rate; 14t = (0.3+(0:(num_iq-1))).*sampling_time; 15s = exp(2.*pi.*carrier_freq.*t.*1i); 16 17%let's use 14 bits 18real_part = round(real(s).*(2^14)); 19imag_part = round(imag(s).*(2^14)); 20 21filename = ['iq_single_carrier_' num2str(carrier_freq) 'Hz_' num2str(num_iq) '.txt']; 22fid = fopen(filename,'w'); 23if fid == -1 24 disp('fopen failed'); 25 return; 26end 27len = length(s); 28for j=1:len 29 fprintf(fid, '%d,%d\n', real_part(j), imag_part(j)); 30end 31fclose(fid); 32disp(['Saved to ' filename]); 33 34filename = ['iq_single_carrier_' num2str(carrier_freq) 'Hz_' num2str(num_iq) '.bin']; 35fid = fopen(filename,'w'); 36if fid == -1 37 disp('fopen error'); 38 return; 39end 40 41iq_int16 = [real_part; imag_part]; 42iq_int16 = iq_int16(:); 43 44fwrite(fid, iq_int16, 'int16'); 45fclose(fid); 46disp(['Saved to ' filename]); 47