LDPC Group-Wise Interleaving for Burst Error Resilience
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Solution Overview
Problem
Existing data transmission methods using LDPC codes face challenges in securing excellent communication quality due to errors and interference, particularly in burst error or erasure scenarios.
Innovation Solution
The implementation of a data processing device and method that includes LDPC encoding with a specific parity check matrix, group-wise interleaving, and mapping to signal points, which helps in error correction and maintaining communication quality by interleaving bits in specific patterns and using appropriate signal points for modulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LDPC encoding is performed with conventional parameters, then data transmission can be achieved, but communication quality deteriorates under burst errors and erasures
Solution Approach 1:
The code is divided into bit groups of 360 bits each, and group-wise interleaving is applied to these segments. This segmentation allows the interleaver to redistribute burst errors across different code blocks, preventing concentrated error patterns that would overwhelm the decoder and thereby improving communication quality under error-prone conditions.
Solution Approach 2:
Group-wise interleaving is performed in advance before modulation and transmission. This preliminary reordering of bits ensures that when burst errors occur during transmission, they are already dispersed across multiple code blocks, enabling the LDPC decoder to correct them more effectively and maintain reliable communication.
2Reliability
If group-wise interleaving is applied to disperse errors, then error correction capability improves, but device complexity increases
Solution Approach 1:
The invention specifies concrete parameters for group-wise interleaving: bit groups of 360 bits and a particular permutation pattern. By fixing these parameters, the system achieves improved error correction without requiring complex adaptive algorithms, thus balancing reliability enhancement with manageable device complexity.
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 12/15, 6/15, or 8/15 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.