Effectiveness of inversion diversity to cope with EMI within a two-channel redundant system

Lannoo, Jonas; Degraeve, Andy; Vanoost, Dries; Boydens, Jeroen; Pissoort, Davy

doi:10.1109/isemc.2018.8393769

Cited by 17 publications

(18 citation statements)

References 11 publications

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“…Furthermore, in [8] the use of correctly/differently matching the trace terminals was studied. And in [7] the effectiveness of inversion for a two-channel redundant system was compared to a single trace mechanism, and the occurrence of false positives was investigated.…”

Section: Time Diversitymentioning

confidence: 99%

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Effectiveness of Time Diversity to Obtain EMI-Diverse Redundant Systems

Lannoo¹,

Waes²,

Degraeve³

et al. 2018

2018 International Symposium on Electromagnetic Compatibility (EMC EUROPE)

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In this paper, the effectiveness of applying an extra time delay to the data transmitted over redundant channels to cope with harsh electromagnetic interference is studied. The redundant system is compared with and without extra time delay and compared with a non-redundant system, which is the reference situation. The geometries under study are disturbed by strong incident fields, which represent reverberation room conditions. These conditions refer to the planewave integral representation, where multiple planewaves with random angles, polarisations and phases are combined and normalised, to create a reverberation room like environment. A reciprocity based technique is used to efficiently calculate the induced voltages and the resulting bit error rate for the different situations. Because of the properties of the geometries that are under test and the introduction of a time-delay in the transmitted datastream, the moment the induced voltage due to EMI is sampled is different, which causes an EMI-diverse system. The results show that using time-diverse signals optimized for the main disturbance frequency to be expected, is a very effective way of creating EMI-diverse behaviour. In a majority voting (2oo3) system it is possible to eliminate all triple occuring faults. Even for higher field strengths and different EMI frequencies, the time diversity method performs well (better than other EMI-diverse techniques).

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Section: Time Diversitymentioning

confidence: 99%

“…Some of these techniques have already been studied, e.g. in [5], [6] the effectiveness of spatial diversity has been studied, in [7] the effect of inversion has been exploited and in [8] the effect of different matching schemes is compared. In this paper, time diversity is investigated.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Time Diversity to Obtain EMI-Diverse Redundant Systems

Lannoo¹,

Waes²,

Degraeve³

et al. 2018

2018 International Symposium on Electromagnetic Compatibility (EMC EUROPE)

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“…As we are moving toward advance technologies, including smart cities, Internet-of-Things(IoT), autonomous vehicles and industry 4.0, our lives are more and more connected with a number of electronic devices. Although technology is continuously adding comfort to our lives, at the same speed, concerns related safety of electronic devices is gaining significant importance, especially for safety-and missioncritical systems [1]. All Electrical/Electronic devices generate some un-intentional EM waves, and at the same time, in terms of safety, these devices are also sensitive to Electromagnetic Interference (EMI).…”

Section: Introductionmentioning

confidence: 99%

“…Initially, results of the detector are analysed using the theoretical simulations, using the continuous sinewave signal as EMI induced voltage source at a different frequency, amplitude and phase. Theoretical results of Inverted-Pair EMI detector shows that it can detect EMI for all cases except when frequency ratio is integer multiple of number of samples per bit and phase difference between EMI induced voltage at both data transmission lines is quite large, where frequency ratio is defined as ratio of EMI frequency f EMI to bit frequency f BIT given in (1).…”

Section: Introductionmentioning

confidence: 99%

Implementation of Inverted-Pair EMI Detector using a Monte-Carlo Based Simulation Framework

Hasan

Claeys

Lannoo

et al. 2020

2020 XXIX International Scientific Conference Electronics (ET)

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The goal of this paper is to implement the design of a previously proposed inverted-pair EMI detector on the Monte-Carlo based simulation framework. The inverted-pair EMI detector can detect electromagnetic disturbances in the wired communication channel, and generate a warning. The warning generated by the detector helps the system to follow the precautionary procedure, including safe-state operation or re-transmission of data. In order to verify the theoretical results, the performance of EMI detector is evaluated in real-like reverb environment using the simulation framework. The simulation framework uses efficient reciprocity-based algorithm to find out voltages and currents induced due to Electro-magnetic (EM) waves; these induced voltages and currents add up with the transmitted signal in data transmission lines, disturbing the actual data. The inverted-pair EMI detector aims to identify these disturbances in the reverberation room environment, thereby performing similar to previously analysed theoretical results.

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“…This can be achieved by using Error Detection Codes (EDCs) and Error Correction Codes (ECCs) and is already used to create EMI Resilience [9], [10]. The hardware based techniques consist of methods to improve the performance of communication systems by introducing inversion [11], spatial [12], [13] and time [14] diversity. Another method to improve the communication is by adding a matched filter to a communication system [15].…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of a Matched Filter to Cope With Harsh Phase and Amplitude Modulated EMI

Lannoo

Claeys

Vanoost

et al. 2020

IEEE Trans. Electromagn. Compat.

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This paper investigates the effectiveness of a matched filter to cope with continuous wave electromagnetic disturbances that are phase and amplitude modulated from wireless systems, e.g. binary phase shift keying, quadrature amplitude modulation. A wired communication channel between sender and receiver that uses non-return-to-zero-level data encoding is disturbed by those nearby wireless systems. A matched filter is used on the wired communication channel to filter out the additional unwanted wireless disturbance. The bit-error-rate (BER) is calculated after filtering and decoding the received voltages and is used as a metric to compare different kind of disturbances and different levels of sampling frequency. The results show that the matched filter is very effective when the carrier frequency of the disturbance is equal to an integer multiple of the bit frequency, and when not equal to the sampling frequency. This sampling frequency is determined by the bit rate of the desired signal and the oversampling factor on which the matched filter is based. Finally, the filter gain at a bit-error-rate of 0.1% is determined. This gain shows that an oversampling of 4 times per bit and using a matched filter already results in an average filter gain of 10 to 15 dB.

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Effectiveness of inversion diversity to cope with EMI within a two-channel redundant system

Cited by 17 publications

References 11 publications

Effectiveness of Time Diversity to Obtain EMI-Diverse Redundant Systems

Effectiveness of Time Diversity to Obtain EMI-Diverse Redundant Systems

Implementation of Inverted-Pair EMI Detector using a Monte-Carlo Based Simulation Framework

Effectiveness of a Matched Filter to Cope With Harsh Phase and Amplitude Modulated EMI

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