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Copy pathgetSource.m
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326 lines (270 loc) · 12.7 KB
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function src = getSource(modType, sps, spf, fs)
%getSource Source selector for modulation types
% SRC = getSource(TYPE,SPS,SPF,fs) returns the data source
% for the modulation type TYPE, with the number of samples
% per symbol SPS, the number of samples per frame SPF, and
% the sampling frequency fs.
switch modType
case {"BPSK","2FSK","GFSK","CPFSK"}
M = 2;
src = @()randi([0 M-1],spf/sps,1);
case {"QPSK","PAM4"}
M = 4;
src = @()randi([0 M-1],spf/sps,1);
case {"8PSK","8FSK"}
M = 8;
src = @()randi([0 M-1],spf/sps,1);
case "16QAM"
M = 16;
src = @()randi([0 M-1],spf/sps,1);
case "64QAM"
M = 64;
src = @()randi([0 M-1],spf/sps,1);
case {"B-FM","DSB-AM","SSB-AM"}
src = @()getAudio(spf,fs);
case "LFM"
% rangeN = [1024, 2432]; % Number of collected signal samples range
rangeN = [512, 1920];
rangeB = [fs/20, fs/16]; % Bandwidth (Hz) range
sweepDirections = {'Up','Down'};
Ts = 1/fs;
%Get randomized parameters
B = randOverInterval(rangeB);
Ncc = round(randOverInterval(rangeN));
hLfm = phased.LinearFMWaveform('SampleRate',fs,'OutputFormat','Samples');
% Generate LFM
hLfm.SweepBandwidth = B;
hLfm.PulseWidth = Ncc*Ts;
hLfm.NumSamples = 256;
hLfm.PRF = 1/(Ncc*Ts);
hLfm.SweepDirection = sweepDirections{randi(2)};
src = hLfm();
% filter = phased.MatchedFilter( ...
% 'Coefficients',getMatchedFilter(hLfm),...
% 'SampleRate', fs,...
% 'SpectrumWindow','None');
% src = filter(wav);
case 'Rect'
% Create signal
hRect = phased.RectangularWaveform(...
'SampleRate',fs,...
'OutputFormat','Samples');
%Get randomized parameters
rangeN = [512, 1920]; % Number of collected signal samples range
Ts = 1/fs;
Ncc = round(randOverInterval(rangeN));
% Create waveform
hRect.PulseWidth = Ncc*Ts;
hRect.PRF = 1/(Ncc*Ts);
hRect.NumSamples = 256;
src = hRect();
% filter = phased.MatchedFilter( ...
% 'Coefficients',getMatchedFilter(hRect),...
% 'SampleRate', fs,...
% 'SpectrumWindow','None');
% src = filter(wav);
case 'Barker'
rangeNChip = [3,4,5,7,11]; % Number of chips
rangeNcc = [1,5]; % Cycles per phase code
rangeFc = [fs/6, fs/5]; % Center frequency (Hz) range
Ts = 1/fs;
% Create signal and update SNR
hPhaseBarker = phased.PhaseCodedWaveform(...
'SampleRate',fs,...
'Code',string(modType),...
'OutputFormat','Samples');
% Get randomized parameters
Fc = randOverInterval(rangeFc);
N = rangeNChip(randi(length(rangeNChip),1));
Ncc = rangeNcc(randi(length(rangeNcc),1));
% Create signal and update SNR
chipWidth = Ncc/Fc;
chipWidthSamples = round(chipWidth*fs)-1; % This must be an integer!
chipWidth = chipWidthSamples*Ts;
hPhaseBarker.ChipWidth = chipWidth;
hPhaseBarker.NumChips = N;
hPhaseBarker.PRF = 1/((chipWidthSamples*N+1)*Ts);
hPhaseBarker.NumSamples = 256;
src = hPhaseBarker();
% filter = phased.MatchedFilter( ...
% 'Coefficients',getMatchedFilter(hPhaseBarker),...
% 'SampleRate', fs,...
% 'SpectrumWindow','None');
% src = filter(wav);
case 'Frank'
rangeNChip = 4; % Number of chips
rangeNcc = [1,5]; % Cycles per phase code
rangeFc = [fs/6, fs/5]; % Center frequency (Hz) range
Ts = 1/fs;
% Create signal and update SNR
hPhaseFrank = phased.PhaseCodedWaveform(...
'SampleRate',fs,...
'Code',string(modType),...
'OutputFormat','Samples');
% Get randomized parameters
Fc = randOverInterval(rangeFc);
N = rangeNChip(randi(length(rangeNChip),1));
Ncc = rangeNcc(randi(length(rangeNcc),1));
% Create signal and update SNR
chipWidth = Ncc/Fc;
chipWidthSamples = round(chipWidth*fs)-1; % This must be an integer!
chipWidth = chipWidthSamples*Ts;
hPhaseFrank.ChipWidth = chipWidth;
hPhaseFrank.NumChips = N;
hPhaseFrank.PRF = 1/((chipWidthSamples*N+1)*Ts);
hPhaseFrank.NumSamples = 256;
src = hPhaseFrank();
% filter = phased.MatchedFilter( ...
% 'Coefficients',getMatchedFilter(hPhaseFrank),...
% 'SampleRate', fs,...
% 'SpectrumWindow','None');
% src = filter(wav);
case 'P1'
rangeNChip = 4; % Number of chips
rangeNcc = [1,5]; % Cycles per phase code
% Create signal and update SNR
hPhaseP1 = phased.PhaseCodedWaveform(...
'SampleRate',fs,...
'Code',string(modType),...
'OutputFormat','Samples');
rangeFc = [fs/6, fs/5]; % Center frequency (Hz) range
Ts = 1/fs;
%Get randomized parameters
Fc = randOverInterval(rangeFc);
N = rangeNChip(randi(length(rangeNChip),1));
Ncc = rangeNcc(randi(length(rangeNcc),1));
% Create signal and update SNR
chipWidth = Ncc/Fc;
chipWidthSamples = round(chipWidth*fs)-1; % This must be an integer!
chipWidth = chipWidthSamples*Ts;
hPhaseP1.ChipWidth = chipWidth;
hPhaseP1.NumChips = N;
hPhaseP1.PRF = 1/((chipWidthSamples*N+1)*Ts);
hPhaseP1.NumSamples = 256;
src = hPhaseP1();
% filter = phased.MatchedFilter( ...
% 'Coefficients',getMatchedFilter(hPhaseP1),...
% 'SampleRate', fs,...
% 'SpectrumWindow','None');
% src = filter(wav);
case 'P2'
rangeNChip = 4; % Number of chips
rangeNcc = [1,5]; % Cycles per phase code
rangeFc = [fs/6, fs/5]; % Center frequency (Hz) range
Ts = 1/fs;
% Create signal and update SNR
hPhaseP2 = phased.PhaseCodedWaveform(...
'SampleRate',fs,...
'Code',string(modType),...
'OutputFormat','Samples');
%Get randomized parameters
Fc = randOverInterval(rangeFc);
N = rangeNChip(randi(length(rangeNChip),1));
Ncc = rangeNcc(randi(length(rangeNcc),1));
% Create signal and update SNR
chipWidth = Ncc/Fc;
chipWidthSamples = round(chipWidth*fs)-1; % This must be an integer!
chipWidth = chipWidthSamples*Ts;
hPhaseP2.ChipWidth = chipWidth;
hPhaseP2.NumChips = N;
hPhaseP2.PRF = 1/((chipWidthSamples*N+1)*Ts);
hPhaseP2.NumSamples = 256;
src = hPhaseP2();
% filter = phased.MatchedFilter( ...
% 'Coefficients',getMatchedFilter(hPhaseP2),...
% 'SampleRate', fs,...
% 'SpectrumWindow','None');
% src = filter(wav);
case 'P3'
rangeNChip = 4; % Number of chips
rangeNcc = [1,5]; % Cycles per phase code
% Create signal and update SNR
hPhaseP3 = phased.PhaseCodedWaveform(...
'SampleRate',fs,...
'Code',string(modType),...
'OutputFormat','Samples');
rangeFc = [fs/6, fs/5]; % Center frequency (Hz) range
Ts = 1/fs;
%Get randomized parameters
Fc = randOverInterval(rangeFc);
N = rangeNChip(randi(length(rangeNChip),1));
Ncc = rangeNcc(randi(length(rangeNcc),1));
% Create signal and update SNR
chipWidth = Ncc/Fc;
chipWidthSamples = round(chipWidth*fs)-1; % This must be an integer!
chipWidth = chipWidthSamples*Ts;
hPhaseP3.ChipWidth = chipWidth;
hPhaseP3.NumChips = N;
hPhaseP3.PRF = 1/((chipWidthSamples*N+1)*Ts);
hPhaseP3.NumSamples = 256;
src = hPhaseP3();
% filter = phased.MatchedFilter( ...
% 'Coefficients',getMatchedFilter(hPhaseP3),...
% 'SampleRate', fs,...
% 'SpectrumWindow','None');
% src = filter(wav);
case 'P4'
rangeNChip = 4; % Number of chips
rangeNcc = [1,5]; % Cycles per phase code
rangeFc = [fs/6, fs/5]; % Center frequency (Hz) range
Ts = 1/fs;
% Create signal and update SNR
hPhaseP4 = phased.PhaseCodedWaveform(...
'SampleRate',fs,...
'Code',string(modType),...
'OutputFormat','Samples');
%Get randomized parameters
Fc = randOverInterval(rangeFc);
N = rangeNChip(randi(length(rangeNChip),1));
Ncc = rangeNcc(randi(length(rangeNcc),1));
% Create signal and update SNR
chipWidth = Ncc/Fc;
chipWidthSamples = round(chipWidth*fs)-1; % This must be an integer!
chipWidth = chipWidthSamples*Ts;
hPhaseP4.ChipWidth = chipWidth;
hPhaseP4.NumChips = N;
hPhaseP4.PRF = 1/((chipWidthSamples*N+1)*Ts);
hPhaseP4.NumSamples = 256;
src = hPhaseP4();
% filter = phased.MatchedFilter( ...
% 'Coefficients',getMatchedFilter(hPhaseP4),...
% 'SampleRate', fs,...
% 'SpectrumWindow','None');
% src = filter(wav);
case 'Zadoff-Chu'
rangeNChip = 4; % Number of chips
rangeNcc = [1,5]; % Cycles per phase code
rangeFc = [fs/6, fs/5]; % Center frequency (Hz) range
Ts = 1/fs;
% Create signal and update SNR
hPhaseZadoffChu = phased.PhaseCodedWaveform(...
'SampleRate',fs,...
'Code',string(modType),...
'OutputFormat','Samples');
%Get randomized parameters
Fc = randOverInterval(rangeFc);
N = rangeNChip(randi(length(rangeNChip),1));
Ncc = rangeNcc(randi(length(rangeNcc),1));
% Create signal and update SNR
chipWidth = Ncc/Fc;
chipWidthSamples = round(chipWidth*fs)-1; % This must be an integer!
chipWidth = chipWidthSamples*Ts;
hPhaseZadoffChu.ChipWidth = chipWidth;
hPhaseZadoffChu.NumChips = N;
hPhaseZadoffChu.PRF = 1/((chipWidthSamples*N+1)*Ts);
hPhaseZadoffChu.NumSamples = 256;
src = hPhaseZadoffChu();
% filter = phased.MatchedFilter( ...
% 'Coefficients',getMatchedFilter(hPhaseZadoffChu),...
% 'SampleRate', fs,...
% 'SpectrumWindow','None');
% src = filter(wav);
otherwise
error('Modulation type not recognized.');
end
%% Subroutines
function val = randOverInterval(interval)
% Expect interval to be <1x2> with format [minVal maxVal]
val = (interval(2) - interval(1)).*rand + interval(1);
end
end