Polar Code Subchannel Partitioning for PBCH Reliability
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Solution Overview
Problem
The polar polar code used in 5G communications systems for channel coding of the physical broadcast channel (PBCH) has room for improvement in communication performance, particularly in terms of reliability and data transmission efficiency.
Innovation Solution
A coding method that divides subchannel location sequence numbers into mutually exclusive subsets based on interleaving operations, determining information bit and frozen bit location sets, and coding the polar code accordingly to enhance communication performance and implicit information carrying capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polar polar code is applied to channel coding of PBCH, then coding scheme is standardized for 5G eMBB scenario, but communication performance has room for improvement
Solution Approach 1:
The subchannel location sequence number set is divided into at least two mutually exclusive subsets based on interleaving operations. Each subset contains subchannel locations that remain within the same subset after any number of interleaving operations. This segmentation allows independent optimization of information bit and frozen bit location sets for improved communication performance.
Solution Approach 2:
Different subsets are assigned different functions: one subset is used for information bit location set while another is used for frozen bit location set. This local differentiation optimizes the polar code structure by placing information bits and frozen bits in strategically selected subsets, thereby improving overall communication performance and reliability.
2Stability of the object's composition
If subchannel locations are fixed in subsets after interleaving operations, then subset stability is improved, but coding complexity increases
Solution Approach 1:
The subsets are determined in advance based on interleaving operations before the actual coding process. By pre-defining which subchannel locations belong to which subset, the system establishes stable groupings that remain invariant under interleaving. This preliminary action reduces runtime complexity while maintaining subset stability.
Data Source
AI summary
This application provides a coding method and apparatus, and a device. The method includes: dividing, by a sending device, a subchannel location sequence number set into at least two mutually exclusive subsets based on an interleaving operation, where a subchannel location in each subset still belongs to the subset and does not belong to another subset after any quantity of interleaving operations are performed; determining, by the sending device, an information bit location set and a frozen bit location set of a to-be-coded polar polar code based on the at least two mutually exclusive subsets; and coding, by the sending device, the to-be-coded polar code based on the information bit location set and the frozen bit location set. The coding method and apparatus, and the device provided in this application can improve communication performance of polar coding.