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Transmit beamforming for space-frequency coded Ml MO-OFDM cystems operating in a correlated ricean fading channel

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dc.contributor.author Suraweera, ND
dc.contributor.author Wavegedara, KCB
dc.date.accessioned 2013-10-21T02:12:48Z
dc.date.available 2013-10-21T02:12:48Z
dc.date.issued 2010
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/8223
dc.description.abstract In highly spatially-correlated channels the diversity gain obtained by diversity coding schemes (such as Space-frequency (SF) coding or Space-Time (ST) coding) is considerably low. Combining beamforming with SF/ST coding help to improve the system performance in spatially correlated channels. In this paper, we propose two beamforming technique for SF coded MIMO-OFDM systems in a frequence-selective Rician-fading channel to minimize the pair-wise error probability (PEP). The proposed beamforming techniques are based on the channel mean and spatial correlation statistics. In Technique, 1. all the eigenmodes of the channel spatial correlation and mean matrices taken in to consideration, where in Technique 2. Only the strongest egimodes of the channel spatial correlation and mean matrices is considered. Simulation results demonstrate that Technique 2 offers a substantial performance improvement over SF coding without beamforming in highly spatially-correlated channels. Furthermore, considerable performance improvements can be obtained using Technique 1 overSF coding only in low correlated channels with a high Ricean K factor.
dc.language en
dc.title Transmit beamforming for space-frequency coded Ml MO-OFDM cystems operating in a correlated ricean fading channel
dc.type Conference-Abstract
dc.identifier.year 2010
dc.identifier.conference Research for Industry
dc.identifier.place Faculty of Engineering, University of Moratuwa
dc.identifier.pgnos 174-177
dc.identifier.proceeding 16th Annual symposium on Research and Industry


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