Unipolar space-time codes with reduced decoding complexity for TH-UWB with PPM

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dc.contributor.author Abou-Rjeily, Chadi
dc.contributor.author Bkassiny, M.
dc.date.accessioned 2016-02-16T07:26:24Z
dc.date.available 2016-02-16T07:26:24Z
dc.date.copyright 2009
dc.date.issued 2016-02-16
dc.identifier.issn 1536-1276 en_US
dc.identifier.uri http://hdl.handle.net/10725/3080
dc.description.abstract In this paper, we consider the problem of space-time (ST) coding with unipolar pulse position modulations (PPM) and propose a novel ST code that satisfies a large number of construction constraints rendering it superior to the existing PPM encoding schemes. In particular, the proposed 2 times 2 code achieves a full transmit diversity order while transmitting at a rate of 1 PPM-symbol per channel use. The proposed scheme can be associated with M-ary PPM constellations for all even values of M without introducing any constellation expansion. This renders the proposed scheme suitable for low cost carrier-less ultra-wideband (UWB) systems where information must be conveyed only by the time delays of the modulated sub-nanosecond pulses without introducing any amplitude amplifications or phase rotations. Finally, the proposed scheme can be associated with a reduced complexity optimal maximum-likelihood (ML) decoder that takes the structure of the proposed code into consideration in order to simplify the decoding procedure. We also propose a simple diversity-preserving suboptimal decoder that requires approximately half the number of multiplications compared to the ML decoder. Possible extensions to transmitters equipped with three antennas are also discussed in situations where a certain number of feedback bits is available. en_US
dc.language.iso en en_US
dc.title Unipolar space-time codes with reduced decoding complexity for TH-UWB 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.woa N/A en_US
dc.author.department Electrical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal IEEE Transactions on Wireless Communications en_US
dc.journal.volume 8 en_US
dc.journal.issue 10 en_US
dc.article.pages 5086-5089 en_US
dc.keywords Time-hopping en_US
dc.keywords Ultra-wideband (TH-UWB) en_US
dc.keywords Space-time (ST) en_US
dc.keywords Pulse position modulation (PPM) en_US
dc.identifier.doi http://dx.doi.org/10.1109/TWC.2009.080684 en_US
dc.identifier.ctation Abou-Rjeily, C., & Bkassiny, M. (2009). Unipolar space-time codes with reduced decoding complexity for TH-UWB with PPM. IEEE Transactions on Wireless Communications, 8(10), 5086-5095. en_US
dc.author.email chadi.abourjeily@lau.edu.lb
dc.identifier.url http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5288944
dc.orcid.id https://orcid.org/0000-0003-2255-1842

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