Expectation propagation approach to joint channel estimation and decoding for OFDM systems

S. Wu, L. Kuang, Z. Ni, J. Lu, David Huang, Qinghua Guo

    Research output: Chapter in Book/Conference paperConference paper

    14 Citations (Scopus)

    Abstract

    We propose a message-passing algorithm of joint channel estimation and decoding for OFDM systems, where expectation propagation is exploited to deal with channel estimation. Specially, the message updating is formulated into a recursive form. As a result, for system with K subcarriers and L channel taps, only O(K + L) messages need to be tracked, and meanwhile they can be efficiently calculated using FFT with complexity O(K-A- + K log2 K), where -A- denotes the constellation size. Numerical experiments show that our algorithm achieves BER performance within 0.5 dB of the known-channel bound. © 2014 IEEE.
    Original languageEnglish
    Title of host publicationIEEE International Conference on Acoustics, Speech and Signal Processing
    Place of PublicationFlorence, Italy
    PublisherIEEE, Institute of Electrical and Electronics Engineers
    Pages1941-1945
    ISBN (Print)9781479928927
    DOIs
    Publication statusPublished - 2014
    EventExpectation propagation approach to joint channel estimation and decoding for OFDM systems - Florence, Italy
    Duration: 1 Jan 2014 → …

    Conference

    ConferenceExpectation propagation approach to joint channel estimation and decoding for OFDM systems
    Period1/01/14 → …

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