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Space-Time Codes for MIMO Ultra-Wideband Communications and MIMO Free-Space Optical Communications with PPM

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dc.contributor.author Abou-Rjeily, Chadi
dc.contributor.author Fawaz, Wissam
dc.date.accessioned 2016-02-05T12:44:05Z
dc.date.available 2016-02-05T12:44:05Z
dc.date.copyright 2008
dc.date.issued 2016-02-05
dc.identifier.issn 0733-8716 en_US
dc.identifier.uri http://hdl.handle.net/10725/3016
dc.description.abstract In this paper, we consider the problem of space-time (ST) coding with pulse position modulation (PPM). While all the existing ST block codes necessitate rotating the phase or amplifying the amplitude of the transmitted symbols, the proposed scheme can be associated with unipolar PPM constellations without introducing any additional constellation extension. In other words, full transmit diversity can be achieved while conveying the information only through the time delays of the modulated signals transmitted from the different antennas. The absence of phase rotations renders the proposed scheme convenient for low- cost carrier-less multiple-input-multiple-output (MIMO) time- hopping ultra-wideband (TH-UWB) systems and for MIMO free-space optical (FSO) communications with direct detection. In particular, we propose two families of minimal-delay ST block codes that achieve a full transmit diversity order with PPM. Designate by n the number of transmit antennas and by M the number of modulation positions. For a given set of values of (n, m), the first family of codes achieves a rate of 1 symbol per channel use (PCU) which is the highest possible achievable rate when no constellation extensions are introduced. The second family of codes can be applied with a wider range of (n, m) at the expense of a reduced rate given by: R=1/n+n-1/n log2(M-1)/n log2(M). en_US
dc.language.iso en en_US
dc.title Space-Time Codes for MIMO Ultra-Wideband Communications and MIMO Free-Space Optical Communications with PPM en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 200701131 en_US
dc.author.idnumber 200602957
dc.author.woa N/A en_US
dc.author.department Electrical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal IEEE Journal on selected areas in communications en_US
dc.journal.volume 26 en_US
dc.journal.issue 6 en_US
dc.article.pages 938-947 en_US
dc.identifier.doi http://dx.doi.org/10.1109/JSAC.2008.080810 en_US
dc.identifier.ctation Abou-Rjeily, C., & Fawaz, W. (2008). Space-time codes for MIMO ultra-wideband communications and MIMO free-space optical communications with PPM. IEEE Journal on Selected Areas in Communications, 26(6), 938-947. en_US
dc.author.email chadi.abourjeily@lau.edu.lb
dc.author.email wissam.fawaz@lau.edu.lb
dc.identifier.url http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4586310
dc.orcid.id https://orcid.org/0000-0003-2255-1842


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