function plot_ofdm(fft_size, occ_tones) ofdm = read_complex_binary('ofdm_corr_out_c.dat'); ofdm_split = split_vect(ofdm, occ_tones); fftc = read_complex_binary('fft_out_c.dat'); fftc_split = split_vect(fftc, fft_size); figure(1) set(gcf, 'Position', [50 50 1000 600]); a = size(ofdm_split); if nargin == 3 maxcount = count; if maxcount > a(1) error('plot_ofdm:tolong', 'Requested count size exceeds size of vectors'); end else maxcount = a(1); end for i = 1:20000 x = ofdm_split(i,:); y = fftc_split(i+1,:); subplot(2,2,1) plot(real(x), imag(x), 'bo') set(gca, 'FontSize', 30, 'FontWeight', 'Bold'); axis([-1.5, 1.5, -1.5, 1.5]) title('I&Q Constellation', 'FontSize', 36); xlabel('Inphase', 'FontSize', 32); ylabel('Quadrature', 'FontSize', 32); subplot(2,2,3) plot(angle(x*j), 'bo') set(gca, 'FontSize', 30, 'FontWeight', 'Bold'); axis([0, occ_tones, -3.5, 3.5]) title('Equalized Symbol Angle', 'FontSize', 36); xlabel('Bin Number (Occ. Tones)', 'FontSize', 32); ylabel('Symbol Angle', 'FontSize', 32); subplot(2,2,2) plot(angle(y*j), 'bo') set(gca, 'FontSize', 30, 'FontWeight', 'Bold'); axis([0, fft_size, -3.5, 3.5]) title('Unequalized Symbol Angle', 'FontSize', 36); xlabel('Bin Number (FFT Size)', 'FontSize', 32); ylabel('Symbol Angle', 'FontSize', 32); Y = 20*log10(abs(y) ./ max(abs(y))); subplot(2,2,4) plot(Y, 'b-') set(gca, 'FontSize', 30, 'FontWeight', 'Bold'); axis([0, fft_size, -50, 1]); title('Frequency Domain of Unequalized Rx', 'FontSize', 36); xlabel('Bin Number (FFT Size)', 'FontSize', 32); ylabel('Power (dB)', 'FontSize', 32); % N = 20*log10(var(abs(x)-1)) disp(sprintf('Symbol Number: %d\n', i)) % disp(sprintf('\tFreq Error: %f\n', anglesh_pn(1+(i-1)*fft_size))) pause end