Co-Channel Interference Cancelation: Cross Coding vs. Beamforming

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    Abstract

    The performance of OFDM systems (e.g. IEEE 802.11g system) can severely degrade due to partial band interference (e.g. from Bluetooth devices). Therefore, we propose a novel cross coding scheme based on erasure codes to mitigate the effect of partial band jamming (PBJ). The key element of this coding scheme is to discard the part of channel that is corrupted by PBJ. By transmitting a packet over a single sub-carrier, the original data can be reconstructed with the assistance of erasure codes. In comparison with the Wiener beamforming technique, the proposed coding scheme has a power gain (i.e. at least 50% power saving) in the wireless receiver, and also has a performance gain in terms of the corrupted bandwidth and SIR. At SIR = 0 dB, it endures 1 MHz larger corrupted bandwidth than using beamforming, allowing one more Bluetooth device to coexist with the IEEE 802.11g system. Furthermore, it has a SIR gain of around 4 dB over the beamforming algorithm when only one Bluetooth interferes the IEEE 802.11g system (i.e. the corrupted bandwidth = 1 MHz).
    Original languageUndefined
    Title of host publication2011 IEEE International Conference on Communications (ICC)
    Place of PublicationUSA
    PublisherIEEE Communications Society
    Pages1-6
    Number of pages6
    ISBN (Print)978-1-61284-231-8
    DOIs
    Publication statusPublished - 4 Jun 2011

    Publication series

    Name
    PublisherIEEE Communications Society
    ISSN (Print)1550-3607

    Keywords

    • METIS-277736
    • IR-77775
    • Encoding
    • Decoding
    • EWI-20374
    • Array signal processing
    • OFDM
    • Signal to noise ratio
    • IEEE 802.11g Standard

    Cite this

    Shao, X., & Slump, C. H. (2011). Co-Channel Interference Cancelation: Cross Coding vs. Beamforming. In 2011 IEEE International Conference on Communications (ICC) (pp. 1-6). USA: IEEE Communications Society. https://doi.org/10.1109/icc.2011.5963132