Segmented Bit Sequences for Limited-Bit Decoding Performance
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Solution Overview
Problem
Current communication systems face challenges in bit sequence segmentation when the quantity of bits in an encoded bit sequence is limited, leading to suboptimal decoding performance and encoding gain loss.
Innovation Solution
A method and apparatus for properly segmenting bit sequences by determining the quantity of segmented code blocks based on available physical resources and parameters, such as minimum bit rate and maximum code block length, to minimize encoding gain loss and improve decoding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If code block segmentation is performed to support longer information length, then the information length capability is improved, but the encoding gain is lost
Solution Approach 1:
The patent divides a long information sequence into multiple code blocks of manageable length (≤6144 bits each) for turbo encoding, then concatenates the encoded blocks. This segmentation enables support for information lengths exceeding 6144 bits while maintaining the encoding gains of shorter blocks through proper segmentation and concatenation strategies.
2Device complexity
If the quantity of bits in encoded bit sequence is limited for proper decoding complexity, then the decoder complexity is controlled, but the decoding performance deteriorates
Solution Approach 1:
The patent segments the encoded bit sequence into multiple code block groups, each containing a limited number of bits that can be processed by the LDPC decoder with controlled complexity. By properly determining the number of code block groups and bits per group based on system parameters, the patent maintains decoding performance while controlling decoder complexity.
Solution Approach 2:
The patent dynamically adjusts parameters such as the number of code block groups, bits per group, and LDPC code rate based on the total number of encoded bits and system requirements. This parameter optimization ensures that the LDPC decoder operates within acceptable complexity limits while achieving target decoding performance.
3Device complexity
If no proper bit sequence segmentation scheme is applied, then the system simplicity is maintained, but the decoding error block rate increases
Solution Approach 1:
The patent performs preliminary determination of the optimal number of code block groups and bits per group before actual encoding and segmentation. By calculating these parameters in advance based on the total information length and system constraints, the patent ensures proper segmentation that minimizes decoding error block rate without requiring complex real-time segmentation decisions.
Data Source
AI summary
A communication method is provided, including: obtaining a to-be-segmented first bit sequence, where a quantity of bits in the first bit sequence is B, and a quantity of bits that can be carried by a physical resource corresponding to the first bit sequence is N1; determining, based on N1 and a parameter L, a quantity C of bit sequences obtained by segmenting the first bit sequence, where a value of L is equal to (B+B1)/Rmin,K<sub2>max</sub2>, Rmin,K<sub2>max </sub2>is a minimum bit rate corresponding to an available maximum code block length Kmax, and B1 is an integer greater than or equal to 0; and segmenting the first bit sequence into C segmented bit sequences. Based on the method, a proper code block segmentation scheme can be provided.