Polar Code Bit Positioning via Recursive Interleaving
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Solution Overview
Problem
Existing polar code encoding/decoding methods struggle to improve communication performance efficiently, particularly in determining the information bit set A, which is often calculated offline and stored, limiting adaptability and performance.
Innovation Solution
The method involves determining an information bit location set or a frozen bit location set based on an interleaving operation or its corresponding de-interleaving operation, and then encoding or decoding the polar code accordingly, thereby improving transmission performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the information bit set A is determined through offline calculation and storage, then the encoding process is simple, but the adaptability to varying transmission requirements is limited
Solution Approach 1:
The patent applies dynamics by making the information bit set determination adaptive to current transmission conditions rather than fixed offline. The terminal device determines the information bit set A based on current channel quality indicators (CQI) and transmission requirements, allowing the system to dynamically adjust to varying transmission conditions while maintaining encoding simplicity through standardized determination criteria.
2Reliability
If extensive offline calculations are performed to determine the information bit set, then the polar code construction is optimized, but the system complexity and computational overhead increase
Solution Approach 1:
The patent applies self-service by enabling the terminal device to autonomously determine the information bit set A based on its own measured channel conditions and transmission requirements. This eliminates the need for complex centralized offline calculations and extensive correspondence tables, as each terminal independently optimizes its polar code construction based on real-time conditions, reducing overall system complexity while maintaining reliability.
3Productivity
If the information bit set A is determined in advance and stored, then the encoding speed is fast, but the communication performance under varying channel conditions deteriorates
Solution Approach 1:
The patent applies parameter changes by adjusting the information bit set A based on varying channel conditions and transmission parameters. Instead of using a fixed predetermined set, the system modifies the composition of set A according to current channel quality, signal-to-noise ratio, and other transmission parameters, thereby maintaining high encoding speed through efficient determination algorithms while adapting to changing conditions to preserve communication performance.
Data Source
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AI summary
A polar code encoding/decoding method in a communications system is provided, including: determining an information bit location set or a frozen bit location set of a polar code based on an interleaving operation or a corresponding de-interleaving operation; and encoding or decoding the polar code based on the determined information bit location set or frozen bit location set.