Polar Code Interleaving for Burst Error Randomization
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Solution Overview
Problem
Current interleaving designs for polar codes in 5G communication systems do not achieve ideal performance, particularly on channels with burst errors, leading to a decline in error correction capability.
Innovation Solution
An interleaving method that groups bits into subsequences and applies different interleaving manners within each group, such as row-column interleaving with varying row or column quantities, to enhance randomness and discretization of the bit sequence, improving encoding and decoding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional interleaving design is used for polar code, then the structure is simple, but the randomicity is insufficient and error correction capability deteriorates on burst error channels
Solution Approach 1:
The bit sequence is divided into multiple groups, and different interleaving manners are applied to different groups. This segmentation allows the system to achieve better error correction capability by distributing burst errors across different groups while maintaining manageable complexity within each group
Solution Approach 2:
Different interleaving manners (different row quantities or column quantities in row-column interleaving) are applied to different groups locally. This local differentiation increases the overall randomicity of the interleaved sequence without requiring complete redesign of the entire interleaving structure
2Reliability
If intra-group bit interleaving is used, then the implementation is simple, but the randomicity is limited and performance on burst error channels is poor
Solution Approach 1:
The interleaving parameters (row quantity or column quantity) are made dynamic by using different values for different groups. This dynamic approach increases randomicity and anti-interference performance while maintaining relatively simple operation within each group
Solution Approach 2:
The row quantity or column quantity parameter is changed across different groups to achieve better randomicity. This parameter variation improves error correction capability while keeping the interleaving operation itself relatively simple
Data Source
AI summary
This application relates to the field of communications technologies, and discloses an interleaving method, a deinterleaving method, and an apparatus, to improve randomicity of polar code interleaving. The method is: obtaining a to-be-interleaved bit sequence, where the to-be-interleaved bit sequence includes L, subsequences, the L subsequences include S subsequence groups, the S subsequence groups include at least a first subsequence group and a second subsequence group, the first subsequence group includes at least two subsequences, the second subsequence group includes at least one subsequence, and L is a positive integer greater than 1; and interleaving the subsequences in the first subsequence group in a first interleaving manner, and skipping interleaving the subsequence in the second subsequence group or interleaving the subsequence in the second subsequence group in a second interleaving manner.