LDPC Group-Wise Interleaving for Burst-Error-Resistant Transmission
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Solution Overview
Problem
Current data transmission using LDPC codes faces challenges in securing excellent communication quality, particularly due to errors and burst errors in the communication path, which affect decoding performance and power consumption.
Innovation Solution
The implementation of a data processing device and method that includes LDPC encoding based on a parity check matrix with specific encoding rates, group-wise interleaving, and mapping to signal points, which involves a detailed parity check matrix table and interleaving scheme to improve error correction and communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LDPC encoding is used with standard parity check matrices, then error correction capability is provided, but communication quality deteriorates due to burst errors and decoding performance degradation
Solution Approach 1:
The patent segments the LDPC code into multiple bit groups (e.g., 360 bits per group) and applies different interleaving patterns to different groups. This segmentation allows the system to handle burst errors more effectively by distributing them across different code groups, preventing any single group from being overwhelmed by concentrated errors that would degrade decoding performance.
Solution Approach 2:
The patent changes the interleaving parameters by using different interleaving patterns for different bit groups within the same LDPC code structure. Specifically, it applies group-wise interleaving where each group can have different interleaving characteristics, allowing optimization for both error correction and resistance to burst errors without changing the fundamental LDPC encoding parameters.
2Reliability
If group-wise interleaving is applied to LDPC codes, then tolerance to burst errors is improved, but device complexity increases due to additional processing steps
Solution Approach 1:
The patent divides the LDPC code into manageable bit groups and applies interleaving at this segmented level rather than treating the entire code block uniformly. This segmentation reduces the complexity of implementing group-wise interleving by breaking down the complex permutation into simpler, repeatable operations on smaller units, making the device implementation more feasible.
Solution Approach 2:
The patent applies interleaving selectively to specific bit groups rather than uniformly to all groups. By identifying which groups benefit most from interleaving and applying it partially, the system achieves improved burst error tolerance while avoiding the full complexity cost of universal group-wise interleving across all code groups.
Data Source
AI summary
The present technology relates to a data processing device and a data processing method, which are capable of securing excellent communication quality in data transmission using an LDPC code. In group-wise interleave, an LDPC code in which a code length N is 16200 bits and an encoding rate r is 6/15, 8/15, or 10/15 is interleaved in units of bit groups of 360 bits. In group-wise deinterleave, a sequence of the LDPC code that has undergone the group-wise interleave is restored to an original sequence. For example, the present technology can be applied to a technique of performing data transmission using an LDPC code.