2016
DOI: 10.1049/el.2015.3668
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Doubly‐selective channel estimation with unknown interference in OFDM systems

Abstract: In orthogonal frequency division multiplexing-based spectrum sharing networks, due to inefficient coordination or imperfect spectrum sensing, the signals from femtocells or secondary users appear as interference in a subset of subcarriers of the primary systems. For pilotbased doubly-selective channel estimation, the embedded pilots in pilot subcarriers would inevitably be harmed by the unpredictable interference. This unsolved issue is considered and proposed is a variational expectation maximisation-based me… Show more

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