root/ResearchApps/PHY/MIMO_OFDM/Alamouti/CRC_table_gen.m
| Revision 527, 413 bytes (checked in by murphpo, 19 months ago) |
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| Line | |
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| 1 | function CRC_Table = CRC_table_gen(CRCPolynomial) |
| 2 | |
| 3 | %Based on the C code example at: |
| 4 | %http://www.packet.cc/files/CRC32-code.html |
| 5 | |
| 6 | |
| 7 | crc_accum = 0; |
| 8 | for n=0:255 |
| 9 | crc_accum = bitshift(n,24,32); %(unsigned long)(i<<24) |
| 10 | |
| 11 | for m=0:7 |
| 12 | x = bitshift(crc_accum,1,32); |
| 13 | if(crc_accum >= 2^31) |
| 14 | crc_accum = bitxor(x,CRCPolynomial); |
| 15 | else |
| 16 | crc_accum = x; |
| 17 | end |
| 18 | end |
| 19 | |
| 20 | CRC_Table(n+1) = crc_accum; |
| 21 | end |
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