Space-time coding for broadband point-to-point and collaborative wireless communications
The focus of this thesis is to leverage the spatial diversity gain afforded by point-to-point and collaborative multi-input multi-output (MIMO) wireless communications systems through the exploitation of space-time and space-frequency block coding. Both frequency-flat narrow band and frequency-selec...
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Loughborough University
2009
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| Online Access: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.510298 |
| Summary: | The focus of this thesis is to leverage the spatial diversity gain afforded by point-to-point and collaborative multi-input multi-output (MIMO) wireless communications systems through the exploitation of space-time and space-frequency block coding. Both frequency-flat narrow band and frequency-selective broadband MIMO channels are considered. A new enhanced extended-orthogonal space-time block coding scheme is proposed for point-to-point closed-loop space-time block coding with four transmit antennas over frequency-flat MIMO channels. This method is confirmed by average bit error rate simulations to outperform both the established Alamouti scheme for two transmit antennas and a quasiorthogonal scheme for four transmit antennas. A receive antenna selection scheme is also proposed to further improve the performance of the proposed closed-loop extended orthogonal space-time scheme. |
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