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49 lines
1.2 KiB
Matlab
49 lines
1.2 KiB
Matlab
% Author: Xianjun Jiao (xianjun.jiao@imec.be; putaoshu@msn.com)
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% SPDX-FileCopyrightText: 2023 UGent
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% SPDX-License-Identifier: AGPL-3.0-or-later
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function single_carrier_gen(carrier_freq, num_iq)
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if exist('carrier_freq', 'var')==0 || isempty(carrier_freq)
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carrier_freq = 1e6;
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end
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if exist('num_iq', 'var')==0 || isempty(num_iq)
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num_iq = 512;
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end
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sampling_rate = 20e6;
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sampling_time = 1/sampling_rate;
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t = (0.3+(0:(num_iq-1))).*sampling_time;
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s = exp(2.*pi.*carrier_freq.*t.*1i);
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%let's use 14 bits
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real_part = round(real(s).*(2^14));
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imag_part = round(imag(s).*(2^14));
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filename = ['iq_single_carrier_' num2str(carrier_freq) 'Hz_' num2str(num_iq) '.txt'];
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fid = fopen(filename,'w');
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if fid == -1
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disp('fopen failed');
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return;
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end
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len = length(s);
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for j=1:len
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fprintf(fid, '%d,%d\n', real_part(j), imag_part(j));
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end
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fclose(fid);
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disp(['Saved to ' filename]);
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filename = ['iq_single_carrier_' num2str(carrier_freq) 'Hz_' num2str(num_iq) '.bin'];
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fid = fopen(filename,'w');
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if fid == -1
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disp('fopen error');
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return;
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end
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iq_int16 = [real_part; imag_part];
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iq_int16 = iq_int16(:);
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fwrite(fid, iq_int16, 'int16');
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fclose(fid);
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disp(['Saved to ' filename]);
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