CLEANUP - changes to folder structure
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43
Theory/Mapping_Coding/bitwise_demapping_pam6.m
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43
Theory/Mapping_Coding/bitwise_demapping_pam6.m
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%%%%% SETTINGS %%%%%%
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useprbs = 1;
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M = 8;
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randkey = 1;
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fsym = 112e9;
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viewresults = 0;
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%%%%% Mapping %%%%%
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M = 6;
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data = 0:M-1;
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bitpersymbol = log2(M);
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s = RandStream('twister','Seed',1);
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bitpattern = randi(s,[0 1], 2^18, 1);
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bitpattern = bitpattern(1:end-mod(length(bitpattern),5));
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bits_tx = Informationsignal(bitpattern);
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symbols = PAMmapper(M,0).map(bits);
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pam6transitions = combvec(PAMmapper(M,0).levels,PAMmapper(M,0).levels)';
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pam6bits = PAMmapper(6,0,"eth_style",0).demap(reshape(pam6transitions',[],1)./sqrt(10));
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symbols_rx = PAMmapper(M,0).map(pam6bits).*sqrt(10);
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pam6bits = reshape(pam6bits',5,[])';
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figure; hold on
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scatter(pam6transitions(:,1), pam6transitions(:,2), 'x', 'LineWidth', 1);
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n = size(pam6transitions,1);
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labels = cellstr(char(pam6bits + '0')); % -> N x 1 cell array of char rows
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text(pam6transitions(:,1), pam6transitions(:,2), labels, ...
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'HorizontalAlignment','left', 'VerticalAlignment','bottom');
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bits_rx = PAMmapper(M,0).demap(symbols);
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[~,error_num,ber,error_pos] = calc_ber(bits_tx.signal,bits_rx.signal,"skip_front",0,"skip_end",0,"returnErrorLocation",1);
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PAMmapper(8,0).showBitMapping
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