A Novel Method of Removing the Influence of Continuous Electromagnetic Wave Disturbances in OFDM Systems
| Autor: | Guy A. E. Vandenbosch, Davy Pissoort, Aleksandr Ovechkin, Dries Vanoost, Tim Claeys |
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| Rok vydání: | 2022 |
| Předmět: |
Disturbance (geology)
Interleaving Orthogonal frequency-division multiplexing Computer science Noise (signal processing) 020206 networking & telecommunications 02 engineering and technology electromagnetic disturbance (EMD) Condensed Matter Physics noise cancelation Atomic and Molecular Physics and Optics Narrowband Amplitude Control theory 0202 electrical engineering electronic engineering information engineering narrowband interference Electrical and Electronic Engineering Continuous wave (CW) noise Spectral leakage orthogonal frequency division multiplexing (OFDM) Quadrature amplitude modulation Computer Science::Information Theory |
| Zdroj: | IEEE Transactions on Electromagnetic Compatibility. 64:338-347 |
| ISSN: | 1558-187X 0018-9375 |
| Popis: | This article describes a novel technique for removing the influence of a continuous wave (or narrowband) electromagnetic disturbance in orthogonal frequency division multiplexing (OFDM) systems with quadrature amplitude modulation or phase-shift keying modulation schemes. The technique relies on a mathematical derivation of how a continuous wave electromagnetic disturbance induces spectral leakage in the OFDM system. Using this derivation, an algorithm is obtained that aims to cancel the continuous wave electromagnetic disturbance by estimating its frequency, retrieving its amplitude and phase from the corrupted OFDM frame. Note that the algorithm does not require any prior information about the disturbance. The proposed algorithm is validated through thorough simulations, covering different modulations, noise variations, and spectral leakage cases, and compared with standard OFDM performance without the algorithm. Through our experimentation, it has been demonstrated that for a disturbance frequency not equal to one of the OFDM subcarriers, the algorithm can estimate the disturbance frequency with high precision, resulting in a gain of more than 80 dB when compared to the case without the algorithm. For a disturbance frequency equal to one of the OFDM subcarriers, a simple coding technique such as Hamming & interleaving enables the user to remove the disturbance. Though the paper is accepted, it will only be included in the next issue of the journal, so the pagination field remains blank. The paper has been published in the Early Access area on IEEE Xplore ispartof: IEEE Transactions on Electromagnetic Compatibility vol:64 issue:2 pages:338-347 status: Published online |
| Databáze: | OpenAIRE |
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