62 lines
1.7 KiB
Matlab
62 lines
1.7 KiB
Matlab
function [bits,errors,ber,errorIndice] = calc_ber(data_in,data_ref,options)
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arguments(Input)
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data_in;
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data_ref;
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options.skip_front = 0;
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options.skip_end = 0;
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options.returnErrorLocation = 0;
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end
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options.skip_end = abs(options.skip_end);
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options.skip_front = abs(options.skip_front);
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assert((options.skip_end+options.skip_front)<length(data_in),"You can not skip more bits than overall length of data! Set skip_front or skip_end to lower value or check data_in");
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bits = 0;
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errors= 0;
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ber= 0;
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errorIndice= [];
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% trim sequence to given start; stop. trim reference if signal is shorter
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[data_in,data_ref]=trimseq(data_in,data_ref,options.skip_front,options.skip_end);
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if length(data_ref) == length(data_in)
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bits = 0;
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bits = bits+numel(data_in(:,options.skip_front+1:end));
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try
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if options.returnErrorLocation == 0
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errors = sum( data_in ~= data_ref,"all" );
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else
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errorIndice = sum(data_in ~= data_ref,1);
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errors = sum(errorIndice ,"all" );
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[~,errorIndice] = find(errorIndice~=0);
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end
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catch
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warning('BER calculation not optimal: Arrays have incompatible sizes for this operation.')
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errors = NaN;
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end
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% Determine BER
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ber = sum(errors)/sum(bits);
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else
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error('Sequence length does not match');
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end
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function [data_,reference_]=trimseq(data,reference,skipstart,skip_end)
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data_ = logical(data(skipstart+1:end-skip_end,:))';
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delta_bits = length(reference) - length(data);
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% skip_end = max(skip_end,delta_bits);
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skip_end = delta_bits + skip_end;
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reference_ = logical(reference(skipstart+1:end-skip_end,:))';
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end
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end |