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In this paper, we develop a new cooperative differential space-time transmission scheme for multiple-input multiple-output (MIMO) relay networks with partial channel state information (CSI). We propose an adaptive selection amplify-and-forward (AF) protocol which is combined with selection combining and antenna selection. Differential space-time coding is employed at the transmitter when the CSI is...
Multiple input multiple output technique has been documented as an attractive means to achieve high data rate transmissions. In this paper, we consider a MIMO-OFDM system and study the semi-blind channel estimation based pilot embedded (PE) technique. The PE technique superimposes the equi-spaced pilot on information-bearing signals. There is no loss in information rate. Employing the first order...
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