Interference Identification Using Golay and Gold Encoded Signals
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Solution Overview
Problem
Communication interfaces in systems often cause electromagnetic interference (EMI) and radio frequency interference (RFI), making it difficult to meet performance requirements and necessitating the identification and mitigation of these interferences to optimize system design and reduce dimensions.
Innovation Solution
A method to identify communication interfaces causing significant interference by characterizing channels between interfaces and locations of interest using Golay and Gold encoded signals, estimating channel power delay profiles, and determining interference patterns to pinpoint sources of undesirable interference, allowing for targeted mitigation strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If communication interfaces are used to transfer information between devices, then communication functionality is improved, but electromagnetic interference and radio frequency interference increase
Solution Approach 1:
The patent applies channel characterization techniques to transform the harmful interference emissions into useful information about the electromagnetic environment. By characterizing the channel between communication interfaces and locations of interest, the system converts EMI/RFI from purely harmful factors into detectable signals that can be measured, analyzed, and used to optimize system design and component placement.
2Reliability
If interference mitigation is implemented to meet performance requirements, then system performance is improved, but system complexity increases
Solution Approach 1:
The patent employs preliminary channel characterization to identify and quantify interference sources before final system design and component placement decisions are made. By performing channel measurements and analysis during the design phase rather than during operation, the system can optimize component spacing and shielding requirements in advance, avoiding the need for complex active interference mitigation systems.
3Volume of moving object
If component spacing is reduced to optimize system dimensions, then system compactness is improved, but interference between components increases
Solution Approach 1:
The patent applies channel characterization to identify specific locations within the system where interference is most problematic. By understanding the spatial distribution of electromagnetic fields and interference patterns through channel measurements, the system can apply targeted local shielding or routing modifications only in those specific high-interference zones, rather than implementing blanket shielding throughout the entire system, thus maintaining compact dimensions while managing interference.
Data Source
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AI summary
In some embodiments, a method includes characterizing a plurality of channels, each of the plurality of channels being a channel between a location and a respective one of the plurality of communication interfaces; for each of the plurality of communication interfaces, supplying signals to the communication interface and detecting interference that occurs at the location as a result of emissions radiated from the plurality of communication interface while the signals are supplied thereto; for each of the plurality of communication interfaces, determining an estimate of interference that would occur at the location as a result of emissions radiated from the communication interface while the signals are supplied thereto, based at least in part on the characterization of the channel between the location and the communication interface; and for each of the plurality of communication interfaces, comparing the estimate of interference that would occur at the location to the detected interference that occurs at the location.