文件名称:alamouti2x1
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we present a new space–time block code for timeand frequency-selective (doubly-selective) channels. It can be interpreted
as the extension of the Alamouti code to doubly-selective channels, and relies on a joint time–frequency reversal of the transmitted sequences. Under
certain channel conditions, the proposed space–time block code belongs
to the class that achieves full spatial, delay, and Doppler diversity using a
maximum-likelihood (ML) receiver, as well as a linear zero-forcing (LZF)
or linear minimum mean-squared error (LMMSE) receiver. For realistic
doubly-selective channels, a real-valued linear data model is presented, for
which different receiver structures can be developed.
as the extension of the Alamouti code to doubly-selective channels, and relies on a joint time–frequency reversal of the transmitted sequences. Under
certain channel conditions, the proposed space–time block code belongs
to the class that achieves full spatial, delay, and Doppler diversity using a
maximum-likelihood (ML) receiver, as well as a linear zero-forcing (LZF)
or linear minimum mean-squared error (LMMSE) receiver. For realistic
doubly-selective channels, a real-valued linear data model is presented, for
which different receiver structures can be developed.
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