里德所罗码MATLAB源码

里德所罗码MATLAB r2015b上rsenc怎么用

1. % realize a (31,25) RS encoding & decoding in GF(2^5)
   
2. % primitive polynomial in GF(2^5):  a^5=a^2+1
   
3. % generator polynomial g(x)=(x+a)(x+a^2)(x+a^3)(x+a^4)(x+a^5)(x+a^6)
   
4. % codeword length N=31
   
5. % information sequence length k=25
   
6. % maximum number of error-correcting t=3
   
7. 
   
8. % the table convert the powers of a to a decimal number
   
9. T=[1,2,4,8,16,5,10,20,13,26,17,7,14,28,29,31,27,19,3,6,12,24,21,15,30,25,23,11,22,9,18];
   
10. 
    
11. % the input information sequence
    
12. disp('输入信息序列：')
    
13. m_xi=1:25
    
14. % press any key to continue, to view the results clearly
    
15. disp('Press any key to continue...')
    
16. pause
    
17. % sequence after encoding
    
18. disp('编码输出序列（发送序列）：')
    
19. t_x=rs_encode(m_xi)
    
20. 
    
21. disp('Press any key to continue...')
    
22. pause
    
23. % press any key to continue
    
24. disp('信道产生的错误位置：')
    
25. sitegen=[0 5 30]
    
26. disp('信道产生的错误数值：')
    
27. valuegen=[5 3 7]
    
28. num=length(valuegen);
    
29. disp('Press any key to continue...')
    
30. pause
    
31. % press any key to continue
    
32. % sequence received after channel
    
33. disp('接收序列')
    
34. r_x=rs_channel(t_x,num,sitegen,valuegen)
    
35. disp('Press any key to continue...')
    
36. pause
    
37. % press any key to continue
    
38. % sequence after decoding
    
39. m_xo=rs_decoder(r_x)
    
40. disp('Done!')
    

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