LDPC Channel Coding with Variable Block Sizes for 5G Reliability
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Solution Overview
Problem
Current 5G communication systems face challenges in maintaining high data throughput and reliability due to noise, fading, and inter-symbol interference, necessitating advanced error-correcting codes that can efficiently restore distorted information.
Innovation Solution
The implementation of low-density parity check (LDPC) encoding and decoding methods that support variable lengths and coding rates, using a dedicated LDPC code design suitable for small information bits and fixed coding rates, with specific block sizes and circulant permutation matrices to enhance channel performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If advanced error-correcting codes are implemented to overcome noise and fading, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the information bits into multiple blocks and applies LDPC encoding to each block separately. This segmentation allows the system to handle large data volumes through parallel processing, reducing overall encoding complexity while maintaining high reliability through distributed error correction across multiple blocks
Solution Approach 2:
The patent employs LDPC codes with variable coding rates and adjustable block sizes, allowing the system to adapt parameters based on channel conditions. By changing parameters such as the number of parity bits and block structure, the system optimizes the balance between reliability and computational complexity for different communication scenarios
2Adaptability or versatility
If LDPC encoding is applied to support various input lengths and coding rates, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent designs a universal LDPC encoding apparatus that can handle multiple input lengths and coding rates using a unified structural framework. The apparatus uses a base matrix that can be systematically extended to support different code rates and block sizes, allowing one device to perform multiple encoding functions without requiring separate specialized hardware for each configuration
Solution Approach 2:
The patent implements dynamic configuration of LDPC code parameters including variable block sizes and adjustable coding rates. The encoding apparatus can dynamically select and switch between different LDPC code configurations based on channel conditions and traffic requirements, enabling adaptability while maintaining a single versatile hardware structure
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A channel encoding method in a communication or broadcasting system includes identifying an input bit size, determining a block size (Z), determining an LDPC sequence for LDPC encoding, and performing the LDPC encoding based on the LDPC sequence and the block size.