This paper proposes a novel planar inverted-F antenna (PIFA) with metamaterial loaded on the ground plane. The metamaterial is composed of an array of Jerusalem cross-shaped PEC structure. Simulation results show that...
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Chaos characteristic analysis of the phase-locked loop (PLL) synthesizer has been made in this paper based on the phase model of it, and we conclude the state equation of this model and the condition when the system b...
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A long synthetic aperture passive localization algorithm is proposed in this paper. First of all, the Doppler change rate of signal can be measured by the image contrast and then, grid points are divided within the ma...
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A Tm laser pumped Mid-IR all solid-state laser is reported. A thulium laser is used to directly drive a ZnGeP2 optical parametric oscillator (OPO) with 1.99μm output to generate the 3∼5μm wavelength. Diode pumped T...
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5G as a widely used mobile network, its security is of great significance. PFCP protocol is one of the important protocols that introduced into 5G core network, After the analysis of PFCP protocol and its security thr...
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Code similarity detection is one of the important means to maintain the healthy development of the software eco-environment. Early code similarity detection method is mainly based on the code attribute measurement tec...
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In this paper, a wideband circularly polarized (CP) microstrip antenna with capacitively coupled feed is presented. There is a pair of slits and two pairs of truncated corners on the patch. A metallic disk connected t...
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controllers play a critical role in software-defined networking(SDN).However,existing singlecontroller SDN architectures are vulnerable to single-point failures,where a controller's capacity can be saturated by fl...
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controllers play a critical role in software-defined networking(SDN).However,existing singlecontroller SDN architectures are vulnerable to single-point failures,where a controller's capacity can be saturated by flooded flow *** addition,due to the complicated interactions between applications and controllers,the flow setup latency is relatively *** address the above security and performance issues of current SDN controllers,we propose distributed rule store(DRS),a new multi-controller architecture for *** DRS,the controller caches the flow rules calculated by applications,and distributes these rules to multiple controller *** controller instance holds only a subset of all rules,and periodically checks the consistency of flow rules with each *** from switches are distributed among multiple controllers,in order to mitigate controller capacity saturation *** the same time,when rules at one controller are maliciously modified,they can be detected and recovered in *** implement DRS based on Floodlight and evaluate it with extensive *** results show that DRS can effectively maintain a consistently distributed rule store,and at the same time can achieve a shorter flow setup time and a higher processing throughput,compared with ONOS and Floodlight.
In this paper, frequency selective surface (FSS) with relative zero-phase shift is realized and characterized. The FSS unit cell is designed by adding cross aperture to the cross loop slot at its center, and the four ...
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In this paper, the radar clutter reconstruction model based on singularity power spectrum (SPS) and instantaneous singularity exponent (ISE) is proposed. The proposed ISE-SPS model consists of power measure channel an...
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