A factor graph approach to digital self-interference mitigation in OFDM full-duplex systems

Abstract : Digital self-interference cancellation is a major challenge for OFDM full-duplex transmissions. Therefore, reliable estimation of both the signal-of-interest and the self-interference channel, becomes the limiting factor in a mobile radio context. In this paper, improved estimation of the time-varying channels is obtained by solving the problem jointly with self-interference cancellation and decoding using a factor graph approach. Taking advantage of the per-subcarrier structure of message-passing, a low-complexity receiver is obtained. Our semi-analytical and numerical results show the superiority of the proposed scheme over state-of-the art self-interference cancellation methods under limited pilot overhead
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https://hal.archives-ouvertes.fr/hal-01539761
Contributor : Médiathèque Télécom Sudparis & Institut Mines-Télécom Business School <>
Submitted on : Thursday, June 15, 2017 - 12:17:05 PM
Last modification on : Thursday, February 7, 2019 - 2:24:57 PM

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Frederic Lehmann, Antoine Berthet. A factor graph approach to digital self-interference mitigation in OFDM full-duplex systems. IEEE Signal Processing Letters, Institute of Electrical and Electronics Engineers, 2017, 24 (3), pp.344 - 348. 〈10.1109/LSP.2017.2662799〉. 〈hal-01539761〉

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