Patent ID: 8689092

Claim:
A digital communications transmitter employing one or more LDPC codes selected from rates including 1/4, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 13/15, 9/10, wherein the LDPC code with the rate 1/4 has a bit node degree distribution, (b 2 ,b 3 ,b 6 )=(11264,256,3840), the LDPC code with the rate 2/5 has a bit node degree distribution (b 2 ,b 3 ,b 4 ,b 12 )=(8960,256,4608,1536), the LDPC code with the rate 1/2 has a bit node degree distribution (b 2 ,b 3 ,b 4 ,b 12 )=(7424,2304,3840,1792), the LDPC code with the rate 3/5 has a bit node degree distribution (b 2 ,b 3 ,b 4 ,b 12 )=(5888,3328,4352,1792), the LDPC code with the rate 2/3 has a bit node degree distribution (b 2 ,b 3 ,b 4 ,b 12 )=(4864,4096,4864,1536), the LDPC code with the rate 3/4 has a bit node degree distribution (b 2 ,b 3 ,b 4 ,b 12 )=(3584,4608,5888,1280), the LDPC code with the rate 4/5 has a bit node degree distribution (b 2 ,b 3 ,b 4 ,b 12 )=(2816,5888,5376,1280), the LDPC code with the rate 5/6 has a bit node degree distribution (b 2 ,b 3 ,b 4 , b 10 )=(2304,4608,6912,1536), the LDPC code with the rate 13/15 has a bit node degree distribution (b 2 ,b 3 ,b 4 ,b 7 )=(1792,5632,6912,1024), and the LDPC code with the rate 9/10 has a bit node degree distribution (b 2 ,b 3 ,b 4 )=(1280,3584,10496).