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D.10.2.8 errorInsert
Procedure from librarydecodegb.lib (see decodegb_lib).
- Usage:
- errorInsert(y,pos,val); y is matrix, pos,val are list of int's
- y is a (code) word, - pos = positions where errors occured, - val = their corresponding values - Return:
- corresponding received word
LIB "decodegb.lib"; //correct 2 errors in [7,3] 8-ary code RS code int t=2; int q=8; int n=7; int redun=4; ring r=(q,a),x,dp; matrix h_full=genMDSMat(n,a); matrix h=submat(h_full,1..redun,1..n); matrix g=dual_code(h); matrix x[1][3]=0,0,1,0; matrix y[1][7]=encode(x,g); print(y); ==> a6,a6,a3,a,0,0,1 //disturb with 2 errors matrix rec[1][7]=errorInsert(y,list(2,4),list(1,a)); print(rec); ==> a6,a2,a3,0,0,0,1 print(rec-y); ==> 0,1,0,a,0,0,0 |