Turbo-Product Code Syndrome Buffers for Low-Overhead Decoding
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Solution Overview
Problem
Turbo-product codes (TPC) decoding processes face significant bottlenecks due to high overhead in accessing and writing data from memory buffers, particularly in row and column decoding, which affects efficiency and resource utilization.
Innovation Solution
Implementing a TPC decoding technique that uses stored component syndromes, where row and column syndromes are separately stored and updated, allowing decoders to directly input and output corrections rather than entire codewords, reducing read and write accesses to memory buffers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional TPC decoding is used with full codeword access, then decoding can be performed, but memory access overhead is significant and efficiency is reduced
Solution Approach 1:
The patent extracts only the necessary syndrome information from the full codeword and stores it separately in syndrome buffers. Instead of accessing entire codewords during decoding iterations, the system only accesses the compact syndrome data, dramatically reducing memory access overhead and improving decoding efficiency
Solution Approach 2:
The patent segments the decoding process into separate syndrome computation and syndrome-based decoding phases. Syndrome buffers are separately maintained for row and column decoding, allowing independent processing without repeated access to the full codeword data in memory
2Speed
If syndrome tables are pre-computed and stored, then decoding speed is improved, but memory requirements increase
Solution Approach 1:
The patent changes the representation parameters by storing syndromes in a compact format rather than full codewords. The syndrome buffers store only the essential error-detection information needed for decoding, reducing the memory volume from full codeword size to minimal syndrome size while maintaining decoding speed through direct syndrome table lookup
Data Source
AI summary
A set of one or more component syndromes associated with a turbo product code (TPC) codeword is obtained from a component syndrome buffer. Component decoding is performed on the set of one or more component syndromes.