Optimized rotations for LDPC-coded Gray-mapped MPSK constellations with signal space diversity

NF Kiyani, SUH Rizvi, JH Weber, GJM Janssen

    Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

    1 Citation (Scopus)


    Rotation of the signal constellation together with in-phase and quadrature channel interleaving (signal space diversity) is known to provide good performance gains over fading channels for multi level modulation methods. This paper studies the extension of such schemes with a low density parity check (LDPC) code. It is shown that for both coded and un-coded Gray-mapped MPSK modulation formats with singal space diversity on a Raleigh fading channel, a well-considered choice of the rotation angle may lead to a significant gain over the conventional un-rotated constellation. However, the optimum rotation angel for the coded scheme may be different from the corresponding optimization of the un-coded scheme.
    Original languageUndefined/Unknown
    Title of host publicationProceedings of IEEE SCVT 2006
    EditorsG Ledoc
    Place of PublicationLiege
    PublisherIEEE Society
    Number of pages4
    ISBN (Print)0780397851
    Publication statusPublished - 2006
    EventIEEE SCVT 2006 - Liege, Belgium
    Duration: 23 Nov 2006 → …

    Publication series



    ConferenceIEEE SCVT 2006
    Period23/11/06 → …


    • conference contrib. refereed
    • Conf.proc. > 3 pag

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