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Near-Optimal Low-Complexity Harmonic Receiver for Unipolar-FSK

Abstract : In this letter, we propose a near-optimal lowcomplexity frequency-domain (FD) harmonic receiver for visible light communication based unipolar frequency-shift keying (U-FSK). The time-domain (TD) maximum-likelihood (ML) receiver for U-FSK is computationally complex, while the sub-optimal receiver increases the noise variance. The proposed harmonic receiver determines the transmitted frequency from the crosscorrelations between the FD received waveform and the FD dictionary waveforms reduced to their strongest harmonics. The results shall demonstrate that besides affording a linerarithmic complexity, the performance of the harmonic receiver closely approaches that of TD ML receiver which exhibits quadratic complexity.
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https://hal.archives-ouvertes.fr/hal-03324540
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Submitted on : Monday, August 23, 2021 - 4:46:07 PM
Last modification on : Friday, April 1, 2022 - 3:45:31 AM
Long-term archiving on: : Wednesday, November 24, 2021 - 7:02:28 PM

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A. W. Azim, M. J. Khan, O. de Wulf, Yannis Le Guennec, G. Maury, et al.. Near-Optimal Low-Complexity Harmonic Receiver for Unipolar-FSK. IEEE Wireless Communications Letters, IEEE comsoc, 2021, 10 (11), pp.2421-2425. ⟨10.1109/LWC.2021.3102123⟩. ⟨hal-03324540⟩

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