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In this paper, secure communication aided by a multiantenna cooperative jammer is investigated. Under very practical but adverse assumptions, i.e., no instantaneous jammer–eavesdropper channel state information (CSI) and imperfect instantaneous jammer–receiver CSI, the residual interference from the jammer to the legitimate receiver appears, even with spatial beamforming. Then, this paper analyzes...
Ultra-wideband (UWB) is a powerful technology for high data rate short-range wireless communications and position location applications. The application of Time-reversal (TR) technology, due to its temporal and spatial focusing characteristic, can greatly improve the performance of UWB wireless communication. In order to take full advantage of TR-UWB technology, it is required to understand the propagation...
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