Unitary differential space-time-frequency codes for MB-OFDM UWB

L. C. Tran, A. Mertins, E. Dutkiewicz, X. Huang

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

    3 Citations (Scopus)
    16 Downloads (Pure)


    In a multiple-input multiple-output (MIMO) multiband orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) system, coherent detection where the channel state information (CSI) is assumed to be exactly known at the receiver requires the transmission of a large number of symbols for channel estimation, thus reducing the bandwidth efficiency. This paper examines the use of unitary differential space-time frequency codes (DSTFCs) in MB-OFDM UWB, which increases the system bandwidth efficiency due to the fact that no CSI is required for differential detection. The proposed DSTFC MB-OFDM system would be useful when the transmission of multiple channel estimation symbols is impractical or uneconomical. Simulation results show that the application of DSTFCs can significantly improve the bit error performance of conventional differential MB-OFDM system (without MIMO).

    Original languageEnglish
    Title of host publication2009 9th International Symposium on Communications and Information Technology, ISCIT 2009
    Place of PublicationPiscataway, N.J
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Number of pages6
    ISBN (Print)9781424445219
    Publication statusPublished - 2009
    Event2009 9th International Symposium on Communications and Information Technology, ISCIT 2009 - Icheon, Korea, Republic of
    Duration: 28 Sept 200930 Sept 2009


    Other2009 9th International Symposium on Communications and Information Technology, ISCIT 2009
    Country/TerritoryKorea, Republic of

    Bibliographical note

    Copyright 2009 IEEE. Reprinted from Communications and Information Technology, 2009. ISCIT 2009. 9th International Symposium on : Songdo-iFEZ ConvensiA, Incheon, Korea : September 28-30, 2009. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.


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