Self-Decodable LDPC Redundancy Versions for Faster Wireless Decoding
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently encoding and decoding binary data due to errors introduced during storage, transmission, and processing, particularly in high-speed data transmission scenarios, necessitating improved encoding and decoding techniques for LDPC codes to support mobile broadband access and other multi-access technologies.
Innovation Solution
The implementation of self-decodable redundancy versions (RVs) for systematic codes, such as LDPC codes, with bit re-ordering and parity bit distribution techniques in encoders and decoders to enhance encoding and decoding efficiency, enabling faster hardware processing and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional encoding and decoding techniques are used for LDPC codes, then error correction capability is provided, but encoding and decoding efficiency is insufficient for high-speed data transmission
Solution Approach 1:
The encoded bit stream is segmented into different redundancy versions (RVs) that can be independently decoded. Each RV contains a self-decodable portion that can be decoded without requiring other RVs, enabling parallel processing and improving encoding/decoding efficiency while maintaining error correction capability through distributed redundancy
Solution Approach 2:
The encoder performs preliminary organization of parity bits into self-decodable redundancy versions before transmission. This preliminary arrangement ensures that each RV contains sufficient information for independent decoding, eliminating the need for complex sequential processing and improving overall processing efficiency
2Reliability
If redundancy versions are used for error correction, then reliability is improved, but device complexity increases due to additional encoding and decoding operations
Solution Approach 1:
Each redundancy version is designed to be self-decodable, meaning it contains all necessary information for independent decoding without requiring other RVs. This self-service capability simplifies the decoder design by eliminating the need for complex multi-RV coordination logic and reduces device complexity while maintaining reliability
Solution Approach 2:
The system changes the parameter organization of parity bits across different RVs to create self-decodable structures. By adjusting how parity bits are distributed and organized in each RV, the system achieves both improved reliability and reduced complexity through simpler decoding operations
3Productivity
If bit re-ordering and parity bit distribution techniques are implemented, then encoding efficiency is improved, but the complexity of the encoding process increases
Solution Approach 1:
The encoder performs bit re-ordering and parity bit distribution as preliminary actions during the encoding process. By organizing bits into self-decodable RVs upfront, the system improves subsequent decoding efficiency without requiring complex real-time processing, as the complexity is shifted to a preliminary organization stage
Data Source
AI summary
The present disclosure provides self-decodable redundancy versions for a systematic code. An apparatus for wireless communications includes at least one processor coupled with a memory and comprising encoder circuitry configured to encode a set of information bits using a systematic code to generate an encoded bit stream with information bits and parity bits, and bit ordering circuitry configured to re-order bits in the encoded bit stream to distribute the information bits and the parity bits. The apparatus includes a transmitter configured to transmit the re-ordered bits in accordance with a radio technology via one or more antenna elements situated proximate the receiver.