Constructing method, encoder and decoder of low density check code
A technology of low-density check and construction method, which is applied in the field of encoder and decoder, and the construction of low-density check code, can solve the problems of high computational complexity, high complexity of LDPC code and LDPC encoding and decoding
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[0053] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0054] figure 1 It is a schematic diagram of constructing an LDPC code provided by an embodiment of the present invention. Combine below figure 1 , A brief introduction to the LDPC code construction method:
[0055] figure 1 The encoding matrix used to store the LDPC code to be constructed and the exclusive OR adder used to construct the LDPC code are shown. The information bits of the message part of the LDPC code to be constructed are input into the coding matrix, where the number of information bits of the message part is predetermined, and the specific determination method is: according to the predetermined code length and code rate of the LDPC code Calculate the number of information bits needed to construct the current LDPC code. For exa...
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