An Endec for high rate quadbit modulo 2 codes


The 16th power state diagram of the QM2 code has more than enough edges leaving state one and ending in state one to create a rate 15/16 code. We can create the 16th power state diagram with two uses of the 8th power state diagram. We use a modified 8th power state diagram by deleting some codewords, with 168 codewords from state 1 to state 1, 40 codewords… (More)


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