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A novel four-element MIMO antenna operating at millimeter wave band is proposed. The half-mode substrate integrated waveguide (HMSIW) cavity backed slot antenna is used as the element to realize a compact structure, high radiation efficiency and interelement isolation. The simulated relative impedance bandwidth is 29.6% from 23.5–31.0GHz for S11<−10dB. And the isolation is lower than −22dB across...
Existing routing schemes in opportunistic networks can be classified two categories: multi-copy based schemes and single-copy based schemes. Multi-copy based schemes can increase the robustness of networks and reduce average delay. However, they consume a large amount of network resources and induce large overhead. Single-copy based schemes can save network resources, but it is difficult to guarantee...
There are many issues in traditional inland ship lockage operation, such as operation cumbersome, low-level efficiency and prone to waterway jam. In order to solve these problems, a relevant solution scheme based on Internet of Things technology is proposed in this paper. The ships used RFID tag can be identified automatically, wireless communication between readers and host machine can be realized...
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