Commit f6058b114fb0ced4708272ba0b4e44bbecfa3a45
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7573b824bb
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mapping.m (same as Hw1 OFDM code)
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mapping.m
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f6058b1
| File was created | 1 | function [map_out]=mapping(data,mode,scale) | ||
| 2 | ||||
| 3 | % mode : Modulation order in power of 2 (1/2/4/6 = BSPK/QPSK/16-QAM/64-QAM) | |||
| 4 | % scale : scaling up or down the modulation, default value = 1 | |||
| 5 | ||||
| 6 | input_seq = data; | |||
| 7 | ||||
| 8 | switch mode | |||
| 9 | case 1 | |||
| 10 | b=scale*[1 -1]; | |||
| 11 | case 2 | |||
| 12 | b=scale*[1+1i -1+1i 1-1i -1-1i]; | |||
| 13 | case 4 | |||
| 14 | b=scale*[1+1i 1+3i 1-1i 1-3i 3+1i 3+3i 3-1i 3-3i -1+1i -1+3i -1-1i -1-3i -3+1i -3+3i -3-1i -3-3i]; | |||
| 15 | case 6 | |||
| 16 | b=scale*[3+3i 3+1i 3+5i 3+7i 3-3i 3-1i 3-5i 3-7i 1+3i 1+1i 1+5i 1+7i 1-3i 1-1i 1-5i 1-7i 5+3i 5+1i 5+5i 5+7i 5-3i 5-1i 5-5i 5-7i 7+3i 7+1i 7+5i 7+7i 7-3i 7-1i 7-5i 7-7i -3+3i -3+1i -3+5i -3+7i -3-3i -3-1i -3-5i -3-7i -1+3i -1+1i -1+5i -1+7i -1-3i -1-1i -1-5i -1-7i -5+3i -5+1i -5+5i -5+7i -5-3i -5-1i -5-5i -5-7i -7+3i -7+1i -7+5i -7+7i -7-3i -7-1i -7-5i -7-7i]; | |||
| 17 | otherwise | |||
| 18 | error('wrong choice'); | |||
| 19 | end | |||
| 20 | ||||
| 21 | count=1; | |||
| 22 | map_out = zeros(1,ceil(length(input_seq)/mode)); | |||
| 23 | ||||
| 24 | for i=1:(ceil(length(input_seq)/mode)) | |||
| 25 | temp=0; | |||
| 26 | for j=1:mode | |||
| 27 | temp=bitor(temp,bitshift(input_seq(count),(j-1))); | |||
| 28 | count=count+1; | |||
| 29 | if(count>length(input_seq)) |