360-Bit LDPC Group Interleaving for Stable Data Transmission
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Solution Overview
Problem
Current data transmission using LDPC codes faces challenges in maintaining excellent communication quality, particularly due to errors and burst errors in communication paths, 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 and group-wise interleaving, followed by mapping to signal points, to enhance error correction and communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LDPC encoding with code length N=16200 and encoding rate r=6/15 is used, then error correction capability is improved, but device complexity increases
Solution Approach 1:
The LDPC code is segmented into multiple bit groups of 360 bits each (16200/360=45 groups). This segmentation enables group-wise interleaving where bits within each group can be processed independently, reducing the complexity of the encoding and decoding operations while maintaining the error correction capability of the full-length code.
Solution Approach 2:
The patent specifies precise parameters for the LDPC code (N=16200, r=6/15) and the bit group size (360 bits). By optimizing these parameters, the system achieves excellent error correction performance接近 the Shannon limit while keeping the device complexity manageable through the structured parameter selection.
2Reliability
If group-wise interleaving in units of 360-bit groups is applied, then burst error resistance is improved, but processing time increases
Solution Approach 1:
By dividing the 16200-bit code into 45 groups of 360 bits, the interleaving operation can be performed on smaller units independently. This segmentation allows parallel processing of different bit groups, reducing the overall processing time while effectively dispersing burst errors across different groups to improve resistance.
Solution Approach 2:
The group-wise interleaving follows a periodic pattern where bits are systematically rearranged within each 360-bit group according to a defined sequence. This periodic structure enables efficient implementation with reduced processing time compared to arbitrary interleaving schemes.
3Reliability
If mapping to 64 signal points in units of 6 bits is performed, then communication quality is improved, but device complexity increases
Solution Approach 1:
The mapping operation processes 6 bits at a time to generate one of 64 signal points (2^6=64). This segmentation into fixed-size units simplifies the mapping logic compared to processing variable-length sequences, reducing device complexity while achieving high communication quality through optimal use of the signal constellation.
4Reliability
If LDPC code with code length N=16200 is used, then error correction performance is improved, but power consumption increases
Solution Approach 1:
The 16200-bit LDPC code is divided into 45 groups of 360 bits, enabling parallel or sequential processing of smaller units. This segmentation reduces the computational burden on the decoder, lowering power consumption while maintaining the excellent error correction performance of the full-length code through the structured group-wise processing approach.
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.