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Recently, there has been a surge of increased interest in using physical layer security to safeguard the fifth generation (5G) mobile networks. In this paper, we study the problem of secure communications in untrusted relay networks. A new nonorthogonal relaying protocol is proposed, aiming at maximizing the secrecy rate. Specifically, we allow the source and relay to transmit signals simultaneously...
In this paper, we address the problem of securing information transmission in very adverse environments, i.e., no eavesdropper channel state information (CSI) and imperfect legitimate channel CSI, by introducing a massive multiple-input–multiple-output (M-MIMO) relay. The relay is powered through wireless power transfer from the source, such that it can flexibly adjust its position according to the...
Data link is an important part of unmanned aerial vehicles system. The key of design of data link for multi-UAVs is the effective use and control of the transport channel. Firstly, an analysis is given on the link characteristics between the GCS and the UAV. Secondly, in order to reduce conflict in multi-UAVs transmission, we realize the polling and broadcast scheme through redesigning the control...
According to the market requirements of Electric Meter. Presenting the remote wireless Electric Meter Reading System, this aims at resolving the shortcomings of the technology of the traditional Electric Meter Reading, combining the characteristics of the ZigBee technology and IEEE802.15.4 standard. The hardware implementation was designed, and then analyzed the use cases for Electric Meter.
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