Optimization of coded modulation with mapping by superposition using EXIT charts

F. Schreckenbach, D. P. Shepherd, M. C. Reed, Z. Shi

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

    Abstract

    We consider signal constellations and bit-to-symbol mappings that arise from the superposition of signals from several layers. This mapping by superposition is applicable to both multi-level coding (MLC) and bit-interleaved coded modulation (BICM). By adjusting the power allocation to the layers, we are able to design a large variety of signal constellations. For some power allocations, the transmitted signal is approximately Gaussian, as required to approach the AWGN capacity. An iterative receiver with a low complexity soft interference canceler is investigated. To analyze the iterative system and optimize the power allocation to the layers, we derive analytic EXIT functions of the interference canceler for the MLC and BICM schemes. To predict the error rate performance at high signal-to-noise ratio (SNR), we provide analytical error bounds.

    Original languageEnglish
    Title of host publication8th Australian Communication Theory Workshop, AusCTW 2007
    Pages56-63
    Number of pages8
    Publication statusPublished - 2007
    Event8th Australian Communication Theory Workshop, AusCTW 2007 - Adelaide, NSW, Australia
    Duration: 5 Feb 20077 Feb 2007

    Publication series

    Name8th Australian Communication Theory Workshop, AusCTW 2007

    Conference

    Conference8th Australian Communication Theory Workshop, AusCTW 2007
    Country/TerritoryAustralia
    CityAdelaide, NSW
    Period5/02/077/02/07

    Fingerprint

    Dive into the research topics of 'Optimization of coded modulation with mapping by superposition using EXIT charts'. Together they form a unique fingerprint.

    Cite this