gkciitd said:Hi all
Can anyone plz mail me the matlab code for rs encoder and decoder
gkciitd(at)gmail.com
Thanks
gkc
chin said:Hi,
If I use the fuction rsgenpoly in the Matlab,
r=rsgenpoly(255,239) to generate the polynomial for RS (255,239). I get return value as:r = GF(2^8) array. Primitive polynomial = D^8+D^4+D^3+D^2+1 (285 decimal) Array elements =
Columns 1 through 10
1 118 52 103 31 104 126 187 232 17
Columns 11 through 17
56 183 49 100 81 44 79
If I use a different tool to generate the polynomial , the tool is at the website of
**broken link removed**
I got the return value as:
G(x)=x^16+59x^15+13x^14+104x^13+189x^12+68x^11+209x^10+30x^9+8x^8
+163x^6+41x^5+229x^4+98x^3+50x^2+36x+59
Both method are use the same field generator as P(x)=x^8+x^4+x^3+x^2+1
Now My Question is:
1. why they come out two results and if both are equal
2. which set of value should be use to do the RS encoder.
can anyone have program for soft decision decoding???
GS algorithm,using the Koetter algorithm for interpolation and the Roth-Ruckenstein algorithm to factor the resulting polynomial,
pls send to dzjian(at)126.com,
thank you,very very much much
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