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Article Dans Une Revue IEEE Signal Processing Letters Année : 2017

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

Résumé

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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Dates et versions

hal-01539761 , version 1 (15-06-2017)

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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, 2017, 24 (3), pp.344 - 348. ⟨10.1109/LSP.2017.2662799⟩. ⟨hal-01539761⟩
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