Interleaving Scheme for Throughput in Periodically Blocked Channels
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Solution Overview
Problem
Communication throughput is compromised due to periodic blockages, such as those caused by rotating helicopter blades, leading to data corruption and the need for error corrections or retransmissions, which consume excess bandwidth and processing power.
Innovation Solution
A concatenated error control coding scheme is implemented, involving an interleaver and deinterleaver that read and write data elements in quasi-reverse and consecutive orders, along with encoding and decoding processes using outer and inner encoders and decoders, to improve communication throughput during periodic blockages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional error control coding is used without quasi-reverse interleaving, then the system structure is simpler, but communication throughput deteriorates due to consecutive block erasures during periodic blockages
Solution Approach 1:
The patent applies reverse interleaving where data elements are read into the interleaver in one order (e.g., consecutive) and read out in the opposite order (e.g., quasi-reverse). This inversion of the conventional interleaving approach ensures that consecutive blocks experiencing periodic blockages are separated in the output stream, preventing consecutive erasures and improving communication throughput during periodic blockages.
2Reliability
If error corrections or retransmissions are performed for blocked data, then data reliability is improved, but bandwidth consumption and processing power requirements increase
Solution Approach 1:
The patent implements preliminary action by using quasi-reverse interleaving to proactively separate potentially blocked consecutive blocks before transmission occurs. This preprocessing of the data sequence prevents the formation of consecutive erasures that would otherwise require costly error correction or retransmission operations, thereby improving reliability while reducing bandwidth and processing power consumption.
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 reading a plurality of data elements into an interleaver in one of a quasi-reverse order and a consecutive order, reading the plurality of data elements out of the interleaver in the other of the quasi-reverse order and the consecutive order, and. transmitting the plurality of data elements via a communication channel that experiences periodic blockages.