LDPC Bit Interleaving Layout for Burst-Error-Resistant 1024QAM
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Solution Overview
Problem
Existing data transmission methods using LDPC codes face challenges in maintaining good communication quality due to burst errors and erasures, which deteriorate decoding performance and increase power consumption.
Innovation Solution
The implementation of a transmission method that includes parity interleaving and block interleaving of LDPC codes, ensuring that parity bits are interleaved at specific positions to prevent simultaneous errors at check nodes, thereby improving resistance to burst errors and maintaining performance in AWGN channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parity interleaving and block interleaving are implemented to improve resistance to burst errors, then decoding performance is improved, but device complexity increases
Solution Approach 1:
The interleaving process is divided into two distinct stages: parity interleaving that operates on parity bits within code blocks, and block interleaving that operates on groups of code bits. This segmentation allows each interleaver to be designed and optimized independently, managing complexity while achieving comprehensive burst error protection
Solution Approach 2:
The parity interleaver acts as an intermediary layer between the LDPC encoder and the block interleaver. It processes parity bits specifically to prevent simultaneous errors at check nodes, thereby mediating the protection against burst errors before the data enters the block interleaving stage
2Reliability
If stronger error correction is applied to improve communication quality, then reliability is improved, but power consumption increases
Solution Approach 1:
The parity interleaving is performed in advance during the transmission phase to prevent burst errors from causing simultaneous failures at check nodes. This preliminary protection reduces the decoding complexity and power consumption at the reception device, as the error correction process starts with already-protected data
Data Source
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AI summary
The present technology relates to a transmission method and a reception device capable of ensuring good communication quality in data transmission by using an LDPC code. In group-wise interleaving, an LDPC code with a code length N of 69120 bits is interleaved in units of bit groups of 360 bits. In group-wise deinterleaving, an arrangement of the LDPC code after the group-wise interleaving is returned to an original arrangement. The present technology can be applied, for example, to the case of performing data transmission by using an LDPC code or the like.