rssymbolmul.m

RS编码程序设计

%
%   File Name   :   RsSymbolMul.m
%   Abstract    :   Function RsSymbolMul(LOperand,ROperand) returns the
%                   product of two elements in GF(2.^4) Field. LOperand and
%                   ROperand are the two elements.
%                    
%   Version     :   1.0     2008-5-20
%*************************************************************************


function[Product]=RsSymbolMul(LOperand,ROperand)

NumtoPower=[1;2;4;8;3;6;12;11;5;10;7;14;15;13;9];%create a table for searching

if(LOperand==0 | ROperand==0)
    Product=0;
else

L=find(NumtoPower==LOperand)-1;%find the location
R=find(NumtoPower==ROperand)-1;%find the location

Product=NumtoPower(mod(L+R,15)+1);%result of Porduct
end;