LDPC Channel Coding for Variable 5G Block Sizes and Rates
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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 improved error-correcting codes for efficient channel encoding and decoding.
Innovation Solution
The development of low-density parity check (LDPC) encoding and decoding methods that support variable input lengths and coding rates, utilizing specific block sizes and circulant permutation matrices to enhance channel encoding and decoding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional error-correcting codes are used in 5G communication systems, then basic communication functionality is maintained, but system reliability and data throughput are degraded due to noise, fading, and inter-symbol interference
Solution Approach 1:
The patent applies parameter changes by systematically varying LDPC code parameters including block sizes (128, 256, 512, 1024 bits), coding rates (1/4, 1/3, 1/2, 2/3, 3/4), and iteration counts (1 to 10 iterations) to optimize performance under different channel conditions, directly addressing the need to overcome noise and interference while maintaining reliability
2Adaptability or versatility
If LDPC encoding is performed with fixed block sizes and coding rates, then encoding simplicity is maintained, but adaptability to variable input lengths and different communication requirements is limited
Solution Approach 1:
The patent implements dynamics by enabling flexible selection of block sizes (128, 256, 512, 1024 bits) and coding rates (1/4, 1/3, 1/2, 2/3, 3/4) based on input data characteristics and channel conditions, allowing the system to adapt to variable input lengths and different communication requirements without fixed constraints
Solution Approach 2:
The system changes encoding parameters dynamically by selecting different block sizes, coding rates, and iteration counts based on communication requirements and channel conditions, achieving adaptability while managing complexity through structured parameter selection
3Adaptability or versatility
If multiple encoding parameters and block sizes are supported, then system versatility is improved, but the complexity of encoding and decoding operations increases
Solution Approach 1:
The patent manages complexity by systematically organizing multiple parameters (block sizes: 128, 256, 512, 1024; coding rates: 1/4, 1/3, 1/2, 2/3, 3/4; iterations: 1-10) into a structured framework that enables versatile operation while maintaining controllable encoding and decoding complexity through methodical parameter selection
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.