Deinterleaver Buffer Reordering for Burst Error Recovery
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Solution Overview
Problem
Communication systems face challenges in correcting errors caused by interference, particularly burst errors, which conventional error correction codes and modulation schemes struggle to distribute effectively across time, leading to decoding failures.
Innovation Solution
A deinterleaver system and method that reverses the changes made by an interleaver, distributing error bursts across more data to reduce error concentration and improve error correction, utilizing a buffer to reorder bits and metrics, and applying inverse permutations to ensure balanced bit distribution across reliability classes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional error correction codes and modulation schemes are used, then the system structure remains simple, but burst errors cannot be effectively distributed across time leading to decoding failures
Solution Approach 1:
The patent divides the data stream into multiple segments using an interleaver that distributes consecutive data elements across different time slots or code blocks. This segmentation allows burst errors to be isolated and distributed across multiple segments rather than concentrated in one location, enabling more effective error correction while maintaining manageable system complexity through modular architecture
Solution Approach 2:
The interleaver performs preliminary reordering of data elements before transmission, anticipating potential burst errors by pre-distributing data across time. This preliminary action ensures that when burst errors occur, they affect distributed segments rather than concentrated blocks, improving error correction capability before the decoding stage
2Reliability
If data is transmitted without interleaving, then the transmission process is fast and simple, but error bursts remain concentrated leading to decoding failures
Solution Approach 1:
The deinterleaver divides the received data into multiple segments and processes them in parallel or distributed manner, reducing the time required to handle concentrated error bursts. By segmenting the error correction task across multiple processing units or time slots, the system maintains fast processing while improving decoding success rate
Solution Approach 2:
The patent employs dynamic interleaving patterns that can adapt to different error conditions and data rates. The interleaver and deinterleaver use configurable parameters to optimize the balance between error distribution effectiveness and processing speed, allowing the system to dynamically adjust to maintain high decoding success rates without excessive processing time
3Reliability
If error bursts are concentrated in one location, then the error pattern is simple to detect, but error correction fails due to high error concentration
Solution Approach 1:
The deinterleaver applies the inverse permutation of the interleaver to reverse the data reordering. This inversion transforms the distributed error patterns back into their original concentrated form for decoding, while the interleaver's forward permutation had previously spread errors to make them detectable as distributed patterns rather than concentrated bursts, improving error recovery capability
Data Source
AI summary
A method, apparatus, and system for deinterleaving data.