Please use this identifier to cite or link to this item: https://doi.org/10.1109/TCOMM.2006.888548
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dc.titleAnalysis of differential orthogonal space-time block codes over semi-identical MIMO fading channels
dc.contributor.authorTao, M.
dc.contributor.authorKam, P.Y.
dc.date.accessioned2014-06-17T02:38:52Z
dc.date.available2014-06-17T02:38:52Z
dc.date.issued2007-02
dc.identifier.citationTao, M., Kam, P.Y. (2007-02). Analysis of differential orthogonal space-time block codes over semi-identical MIMO fading channels. IEEE Transactions on Communications 55 (2) : 282-291. ScholarBank@NUS Repository. https://doi.org/10.1109/TCOMM.2006.888548
dc.identifier.issn00906778
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/55073
dc.description.abstractWe study the performance of differential orthogonal space-time block codes (OSTBC) over independent and semi-identically distributed block Rayleigh fading channels. In this semi-identical fading model, the channel gains from different transmit antennas to a common receive antenna are identically distributed, but the gains associated with different receive antennas are nonidentically distributed. Arbitrary fluctuation rates of the fading processes from one transmission block to another are considered. We first derive the optimal symbol-by-symbol differential detector, and show that the conventional differential detector is suboptimal. We then derive expressions of exact bit-error probabilities (BEPs) for both the optimal and suboptimal detectors. The results are applicable for any number of receive antennas, and any number of transmit antennas for which OSTBCs exist. For two transmit antennas, explicit and closed-form BEP expressions are obtained. For an arbitrary number of transmit antennas, a Chernoff bound on the BEP for the optimal detector is also derived. Our results show that the semi-identical channel statistics degrade the error performance of differential OSTBC, compared with the identical case. Also, the proposed optimal detector substantially outperforms the conventional detector when the channel fluctuates rapidly. But in near-static fading channels, the two detectors have similar performances. © 2007 IEEE.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/TCOMM.2006.888548
dc.sourceScopus
dc.subjectDifferential detector
dc.subjectIndependent and nonidentical channels
dc.subjectRayleigh fading
dc.subjectSpace-time block codes (STBC)
dc.subjectTransmit diversity
dc.typeArticle
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.doi10.1109/TCOMM.2006.888548
dc.description.sourcetitleIEEE Transactions on Communications
dc.description.volume55
dc.description.issue2
dc.description.page282-291
dc.description.codenIECMB
dc.identifier.isiut000244498400010
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