A design method for low-density odd/even check code matrix
A parity check matrix, low-density technology, applied in the field of communication, can solve the problem that the convergence speed is not very obvious
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[0091] The following is an example of implementing an LDPC code with a code length of 1200, a sub-matrix of 30×30, and a code rate of 3 / 4:
[0092] The constraints of the hardware implementation are: dmax = 4, M b = 10.
[0093] Follow step 1 and attached Figure 6 As shown, the matrix has 300 rows and 1200 columns, among which the first 900 columns are information symbols, and the last 300 columns are check symbols. Each row is divided into 40 sub-matrices, the first 30 belong to information symbols, and the last 10 belong to check symbols. Each column has 10 sub-matrices.
[0094] Follow step 2 and attached Figure 7 As shown, the depth from the first block of memory to the eighth block of memory is 3 4 4 44 44 4 in order. The depth of the ninth and tenth blocks is 9. Since the sub-matrix information of the 30th variable node has a column weight of 3, it cannot be stored in the ninth and tenth blocks, but is stored in the eighth block.
[0095] Follow step 3 and attached Figure ...
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