Byte Interleaving Synchronization for Periodic Communication Blockages
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Solution Overview
Problem
Communication terminals experience periodic blockages due to rotating blades, leading to corrupted data and increased bandwidth and processing requirements for error corrections or retransmissions.
Innovation Solution
Synchronize code block and interleaver boundaries at the byte level to minimize acquisition time, using local interleaving techniques with byte interleavers to recover performance loss and enhance communication throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If byte interleaving is used to speed up processing, then processing speed is improved, but LDPC erasure code decoding performance degrades
Solution Approach 1:
The patent segments the interleaving process into two distinct stages: byte-level interleaving for speed and bit-level local interleaving for performance preservation. The byte interleaver operates on entire bytes to maximize processing speed, while the local interleaver operates on individual bits within each byte to maintain decoding performance. This segmentation allows each stage to optimize for its specific function without compromising the other.
Solution Approach 2:
The patent applies different interleaving qualities to different parts of the data structure. Byte-level interleaving provides coarse-grained reordering for speed, while bit-level local interleaving provides fine-grained reordering within each byte for performance. This local quality approach ensures that the critical bit-level relationships needed for decoding are preserved while still benefiting from byte-level processing speedups.
2Loss of time
If synchronization is not performed, then acquisition time is reduced, but communication reliability deteriorates due to periodic blockages
Solution Approach 1:
The patent performs preliminary synchronization actions by aligning code block boundaries with interleaver boundaries before data transmission begins. This preliminary alignment ensures that when periodic blockages occur, the synchronization structure is already in place to handle them efficiently, reducing the need for time-consuming re-synchronization during operation.
Solution Approach 2:
The patent implements periodic synchronization markers within the data stream that occur at regular intervals corresponding to the interleaver duration. These periodic markers allow the receiver to maintain synchronization throughout transmission, automatically recovering from periodic blockages without significant loss of time or reliability.
Data Source
AI summary
Communication terminals, systems and methods are disclosed herein. In an embodiment, a method for improving communication throughput when experiencing periodic blockages includes generating at least one outer code block including a plurality of sync data elements, writing the sync data elements from the at least one outer code block to a same column of at least one interleaver including a plurality of rows and a plurality of columns, and writing additional data elements from the outer code block to other columns of the at least one interleaver.