Segmented cyclic redundancy check method for polarization codes
A technology of cyclic redundancy check and polar code, which is applied in the direction of error detection coding, channel coding adjustment, transmission modification based on link quality, etc., can solve the problem of undecipherable performance and complexity improvement, and high verification complexity , Difficult to implement and other problems, to achieve the effect of reducing decoding complexity, reducing search paths, and reducing decoding complexity
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[0032] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:
[0033] refer to figure 1 , the implementation steps of the present invention are as follows:
[0034] Step 1, determine the parameters of the channel:
[0035] The code length of the polar code used in this example is N=128; the information bit length is K=64; the code rate is R=0.5; the noise variance is The total length of check digits is r=16; the list length is B=32;
[0036] Divide the information bit sequence into m=2 sub-information bit sequences, define the set The check bit length of the q ∈ {1,2}th sub-information sequence is r q , the check bit length of the first sub-information sequence is r 1 = 4, the check bit length of the second sub-information sequence is r 2 = 12;
[0037] Order u i ∈{0,1} denotes the bits transmitted by the i-th channel, where 1≤i≤128; represents the input bit sequence.
[0038] Step 2, calculate the correct prob...
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