Encoder device and encoding method for LDPC code
A technology of LDPC codes and encoders, which is applied to the application of multi-bit parity error detection coding, error correction/detection using block codes, data representation error detection/correction, etc. question
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[0044] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0045] The invention can encode the LDPC codes of three code rates of 0.4, 0.6 and 0.8 in the digital TV terrestrial transmission standard. Input the information to be coded and the corresponding code rate of the LDPC code, and the standard LDPC code stream can be output. Solved the problem of excessive consumption of hardware resources or reduced encoding rate for encoding under multi-bit rate.
[0046] First, the generation matrix of the LDPC code used in this embodiment will be described. The generator matrix is referred to as the G matrix for short. The form of the generator matrix of the LDPC codes with three code rates used in the digital TV terrestrial transmission standard is shown in Figure 1, where I is a b×b unit matrix, and O is a b×b unit matrix. zero matrix of b, B i,j (1≤i≤k, 1≤j≤c) is a circular determinant of b×b. we will B i,j...
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