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			34 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
		
		
			
		
	
	
			34 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
|  | 
 | ||
|  | make-pchk ex-ham7a.pchk 3 7 0:0 0:3 0:4 0:5 1:1 1:3 1:4 1:6 2:2 2:4 2:5 2:6 | ||
|  | make-gen  ex-ham7a.pchk ex-ham7a.gen dense | ||
|  | Number of 1s per check in Inv(A) X B is 3.0 | ||
|  | transmit  7x100000 ex-ham7a.rec 1 awgn 0.5 | ||
|  | Transmitted 700000 bits | ||
|  | 
 | ||
|  | # DECODE BY ENUMERATION TO MINIMIZE BLOCK ERROR PROBABILITY | ||
|  | 
 | ||
|  | decode    ex-ham7a.pchk ex-ham7a.rec ex-ham7a.dec-blk awgn 0.5 \ | ||
|  |           enum-block ex-ham7a.gen | ||
|  | Decoded 100000 blocks, 100000 valid.  Average 16.0 iterations, 2% bit changes | ||
|  | verify    ex-ham7a.pchk ex-ham7a.dec-blk ex-ham7a.gen  | ||
|  | Block counts: tot 100000, with chk errs 0, with src errs 186, both 0 | ||
|  | Bit error rate (on message bits only): 7.950e-04 | ||
|  | 
 | ||
|  | # DECODE BY ENUMERATION TO MINIMIZE BIT ERROR PROBABILITY | ||
|  | 
 | ||
|  | decode    ex-ham7a.pchk ex-ham7a.rec ex-ham7a.dec-bit awgn 0.5 \ | ||
|  |           enum-bit ex-ham7a.gen | ||
|  | Decoded 100000 blocks, 99988 valid.  Average 16.0 iterations, 2% bit changes | ||
|  | verify    ex-ham7a.pchk ex-ham7a.dec-bit ex-ham7a.gen  | ||
|  | Block counts: tot 100000, with chk errs 12, with src errs 186, both 7 | ||
|  | Bit error rate (on message bits only): 7.775e-04 | ||
|  | 
 | ||
|  | # DECODE BY PROBABILITY PROPAGATION | ||
|  | 
 | ||
|  | decode    ex-ham7a.pchk ex-ham7a.rec ex-ham7a.dec-prp awgn 0.5 \ | ||
|  |           prprp 200 | ||
|  | Decoded 100000 blocks, 99927 valid.  Average 0.3 iterations, 2% bit changes | ||
|  | verify    ex-ham7a.pchk ex-ham7a.dec-prp ex-ham7a.gen  | ||
|  | Block counts: tot 100000, with chk errs 73, with src errs 276, both 52 | ||
|  | Bit error rate (on message bits only): 1.290e-03 |