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This letter proposes a novel approach based on time reversal (TR) technique to achieve multiplexing in a single antenna system by using pulse shaping network (PSN). The PSN used in this letter is easy to design and can conveniently control the focusing performance of the TR technique. Experimental results show a good performance of the new scheme.
A new scheme for transmit antenna selection (TAS) is proposed to reduce the overhead for pilot symbols and feedback signaling. The proposed scheme considers a subset of all antennas in each slot and changes the subset in each following slot. In this way, the overhead can be reduced significantly. Simulation results also show that the performance of the proposed scheme is almost the same as the traditional...
According to the number of successful decoded relay nodes with good destination-to-relay and relay-to-destination link qualities, a simple adaptive relay selection algorithm and its corresponding protocol is presented to achieve a good diversity and multiplexing gains. When the antenna number of the destination is less than the number of successful decoded relay nodes, the opportunistic relay selection...
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