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This paper introduces eigen-beamforming technique into the STBC multiplexing scheme. STBC multiplexing scheme integrates orthogonal space time block codes into spatial multilayers such as V-BLAST structure. This hybrid system can balance the spatial multiplexing and diversity gain efficiently. When perfect channel state information (CSI) is available at the transmitter, eigen-beamforming can be employed...
The degradation in the bit error probability of V-BLAST system is often owing to its low diversity and error propagation in the receiver. But if channel state information is available at the transmitter, we always design precoder to optimize the transceiver, in order to improve the performance obviously. In this paper, we firstly overview the ideal precoder with perfect channel state information (CSI)...
This paper proposes a simple orthogonal frequency -division multiplexing (OFDM) transmission scheme for asynchronous cooperative communications over frequency-selective fading channels. In this scheme, the relay nodes only implement very simple operations on their received signals, and no decoding, DFT or IDFT operation is needed. With our proposal, the received signals have the Alamouti code structure...
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