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In this paper, we investigate an Nt × Nr dual-polarized multiple input multiple output (DP-MIMO) channel model and address how the cross-polarization components affect the performance of the DP-MIMO system. A novel precoding design based on oblique projection is proposed to effectively suppress the interference caused by the cross-polarization components. Moreover, considering a 2 × 1 dual-polarized...
High precision location information formulates the basis of many modern wireless location based services (LBS). However, location privacy becomes an important issue along with the advantages that LBS offers. In this paper, we first show that, a novel eavesdropper is able to perform position estimation of the agent by purely overhearing the measurement signals between agents and anchors, using a time...
This paper considers energy-constrained cognitive radios (CR) which can access a time-slotted licensed spectrum band in hybrid mode. At the beginning of each time slot, CR decides whether to be idle or to transmit. If transmission, CR has to determine which access mode to operate in. If the underlay mode is selected, CR shares spectrum with licensed systems by transmitting with a low power to ensure...
This workshop brings together scientists, technologists, and educators in a discussion of how data rich geoscience cyberinfrastructure frameworks can be more effectively deployed in high school and early undergraduate settings.
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