Polar Code Segmentation and Parity Control for Stable 5G Decoding
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Solution Overview
Problem
The use of polar codes in 5G communication systems requires improved methods for encoding and decoding to enhance stability and efficiency, particularly in determining the number of segmentations and whether to perform segmentation.
Innovation Solution
A method and apparatus for encoding and decoding polar codes in wireless communication systems, involving a transmission-end apparatus that determines the number of parity check bits and performs segmentation based on parameters, and a reception-end apparatus that decodes the encoded information bits using a polar decoder and segment concatenator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If segmentation is performed in polar code encoding, then decoding performance is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the information bit sequence into multiple code blocks when the sequence length exceeds a threshold value. Each code block is then independently encoded with polar codes. This segmentation approach improves decoding performance by enabling more manageable error correction while the threshold-based criterion controls the complexity increase by only segmenting when necessary.
2Reliability
If the number of parity check bits is increased, then error correction capability is improved, but transmission efficiency decreases
Solution Approach 1:
The patent dynamically adjusts the number of parity check bits based on the length of the information bit sequence. When the information bit sequence is short, more parity check bits are added to enhance error correction capability. When the sequence is long, fewer parity bits are used to maintain transmission efficiency. This parameter adjustment resolves the contradiction by adapting the error correction strength to the actual data size.
3Reliability
If segmentation threshold is set low, then decoding performance improves, but encoding overhead increases
Solution Approach 1:
The patent establishes a predetermined segmentation threshold value before the encoding process begins. This threshold is set in advance to balance decoding performance and encoding overhead. By having this criterion prepared beforehand, the system can quickly determine whether segmentation is needed without complex real-time calculations, thus reducing encoding overhead while maintaining decoding performance.
Data Source
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AI summary
The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure relates to encoding and decoding by using a polar code in a wireless communication system, and an operation method of a transmission-end apparatus includes determining segmentation and the number of segments, based on parameters associated with encoding of information bits, encoding the information bits according to the number of check bits, and transmitting the encoded information bits to a reception-end apparatus.