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task 1 should be completed now

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ti_mo
2026-06-07 13:43:03 +02:00
parent ec472a44e8
commit eff95ac6e2
6 changed files with 733 additions and 24 deletions
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lab_4/lab_4.m
+55 -9
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@@ -8,7 +8,7 @@ tx_antenna_count = 1;
rx_antenna_count = 1;
snrs = (0:1:40);
packets_per_snr = 250;
packets_per_snr = 1024;
maxNumErrors = 50;
% elevation_angle = 50;
@@ -35,7 +35,6 @@ ntn_tdl_delay_profiles = ["A" "B" "C" "D"];
meanSlantRange = mean(slantRanges);
meanSatelliteDopplerShift = mean(dopplerShifts);
meanNormalizedCFO = meanSatelliteDopplerShift / wifi_be_subcarrier_spacing;
disp("Mean Elevation Angle: " + meanElevationAngle + "°")
@@ -43,17 +42,31 @@ disp("Mean Slant Range: " + meanSlantRange + "m")
disp("Mean Satellite Doppler Shift: " + meanSatelliteDopplerShift + "Hz")
disp("Normalized CFO: " + meanNormalizedCFO)
errorCounts = zeros(numel(mcs_values), numel(snrs));
packetCounts = zeros(numel(mcs_values), numel(snrs));
errorRates = zeros(numel(mcs_values), numel(snrs));
cfrMagnitudesBySnr = cell(numel(mcs_values), numel(snrs));
for imcs = 1 : numel(mcs_values)
cfgEHT.User{1}.MCS = mcs_values(imcs);
errorCountsForMcs = zeros(1, numel(snrs));
packetCountsForMcs = zeros(1, numel(snrs));
errorRatesForMcs = zeros(1, numel(snrs));
cfrMagnitudesForMcs = cell(1, numel(snrs));
parfor snr_idx = 1 : length(snrs)
local_channel = clone(channel)
[errorCount, packetCount] = simulateTransmission(cfgEHT, local_channel, maxChDelay, snrs(snr_idx), packets_per_snr, maxNumErrors, simParameters, chanBW, snr_idx, elevationAngles);
errorCounts(snr_idx) = errorCount;
packetCounts(snr_idx) = packetCount;
errorRates(imcs, snr_idx) = errorCount / packetCount;
local_channel = clone(channel);
[errorCount, packetCount, cfrMagnitudes] = simulateTransmission(cfgEHT, local_channel, maxChDelay, snrs(snr_idx), packets_per_snr, maxNumErrors, simParameters, chanBW, snr_idx, elevationAngles);
errorCountsForMcs(snr_idx) = errorCount;
packetCountsForMcs(snr_idx) = packetCount;
errorRatesForMcs(snr_idx) = errorCount / packetCount;
cfrMagnitudesForMcs{snr_idx} = cfrMagnitudes;
end
errorCounts(imcs, :) = errorCountsForMcs;
packetCounts(imcs, :) = packetCountsForMcs;
errorRates(imcs, :) = errorRatesForMcs;
cfrMagnitudesBySnr(imcs, :) = cfrMagnitudesForMcs;
end
markers = 'ox*sd^v><ph+ox*sd^v><ph+';
@@ -66,8 +79,41 @@ grid on;
xlabel('SNR (dB)');
ylabel('PER');
% task 1
dataStr = arrayfun(@(x)sprintf('MCS %d',x), 2, 'UniformOutput', false);
dataStr = arrayfun(@(x)sprintf('MCS %d', x), mcs_values, 'UniformOutput', false);
% task 4
% dataStr = arrayfun(@(x)'MCS Sweep Values: [0 2 4 8 10 12 13]', 'UniformOutput', false);
legend(dataStr, 'Location', 'NorthEastOutside');
title(['PER (EHT MU), ' num2str(cfgEHT.ChannelBandwidth) ', NTN-TDL-C, ' num2str(tx_antenna_count) '-by-' num2str(rx_antenna_count)]);
cfrMagnitudes = [];
for snr_idx = 1 : numel(snrs)
cfrMagnitudes = [cfrMagnitudes cfrMagnitudesBySnr{1, snr_idx}];
end
%{ for testing purposes
if ~isempty(cfrMagnitudes)
figure;
packetPlots = plot(cfrMagnitudes, 'Color', [0.75 0.75 0.75]);
hold on;
meanCfrPlot = plot(mean(cfrMagnitudes, 2), 'b', 'LineWidth', 2);
grid on;
xlabel("Subcarrier index");
ylabel("|H[k]|");
legend([packetPlots(1) meanCfrPlot], ["Packets" "Mean CFR"], 'Location', 'best');
title("CFR magnitude for collected packets");
end
%}
% extract a representative packet for cfr plot
representativeSnr = 25;
representativeSnrIdx = find(snrs == representativeSnr);
representativeCfrs = cfrMagnitudesBySnr{1, representativeSnrIdx};
representativeCfr = representativeCfrs(:, 1);
figure;
plot(representativeCfr);
grid on;
xlabel("Subcarrier index");
ylabel("|H[k]|");
title("CFR magnitude for representative packet at 25 dB SNR");