The importance of incremental learning in changing environments has been acknowledged in recent years. In this paper we present an ensemble learning method for supervised learning with drifting concepts. The method em...
详细信息
A new fast numerical algorithm for the double-order double-argument Hankel transformation is proposed in this article. Due to the fact of rapid oscillation and slow attenuation of the kernel function, it is difficult ...
详细信息
A new fast numerical algorithm for the double-order double-argument Hankel transformation is proposed in this article. Due to the fact of rapid oscillation and slow attenuation of the kernel function, it is difficult to compute numerically. The New Algorithm break up the infinite integral interval into two subintervals. For the infinite subinterval, the integral can be calculated by Fast Fourier Transformation (FFT) efficiently; For the other finite integral, there has two choice, the one is ordinary quadrature algorithm which is simple but no efficient enough, the other is to express the integral as a summation series of the Bessel function integral, and then the calculus can be done with more efficient manner.
The data rate of high-performance airborne sensors is much higher than the wireless data transfer rate in many detection applications, so the onboard data storage systems are usually used to store the sensor data. The...
详细信息
In this paper, we consider the problem of multi-unmanned aerial vehicles' (UAVs), scheduling for cooperative jamming, where UAVs equipped with directional antennas perform collaborative jamming tasks against sever...
详细信息
Currently, as the resolution of sensors such as radar continues to improve, the signal bandwidth is rapidly increasing. There is a growing demand for higher sampling rates and data transmission rates in Analog-to-Digi...
详细信息
Interference alignment(IA) is a promising technique to effectively mitigate interference in wireless communication *** this paper,a novel IA based scheme is proposed,which is jointed design of transmit precoding matri...
详细信息
Interference alignment(IA) is a promising technique to effectively mitigate interference in wireless communication *** this paper,a novel IA based scheme is proposed,which is jointed design of transmit precoding matrices and receive beam forming matrices for the three-cell multiple-input multiple-output(MIMO).Gaussian interfering broadcast channels(MIMO-IFBC) with constant channel between each node,where each base station(BS) is equipped with M antennas,each mobile station(MS) is equipped with N antennas on the cell boundary,and each BS sends d data streams to each user in its *** corresponds to a down link scenario for cellular networks,where K users with the user cooperation in each *** is also analytically shown that total 3Kd degrees of freedom(Do F)is achievable if M = N≥*** simulations demonstrate the sum-rate of our proposed scheme also out performs those of conventional techniques,especially in the high signal-to-noise ratio(SNR)regime.
Energy systems are currently undergoing a transformation towards new paradigms characterized by decarbonization,decentralization,democratization,and *** this evolving context,energy blockchain,aiming to enhance effici...
详细信息
Energy systems are currently undergoing a transformation towards new paradigms characterized by decarbonization,decentralization,democratization,and *** this evolving context,energy blockchain,aiming to enhance efficiency,transparency,and security,emerges as an integrated technological solution designed to address the diverse challenges in this *** security is essential for the reliable and efficient functioning of energy *** pressing need to address challenges related to secure data storage,effective data management,and efficient data utilization is increasingly *** paper offers a comprehensive survey of academic discourse on energy blockchain data security over the past five years,adopting an all-encompassing perspective that spans data storage,management,and *** work systematically evaluates and contrasts the strengths and weaknesses of various research ***,this paper proposes an integrated hierarchical on-chain and off-chain security energy blockchain architecture,specifically designed to meet the complex security requirements of multi-blockchain business ***,this paper identifies key directions for future research,particularly in advancing the integration of storage,management,and utilization of energy blockchain data security.
Among different electromagnetic spectrum monitoring tasks, a fundamental one is detecting the presence of weak communication signal under non-cooperative setting. Various detection methods have been studied in the lit...
详细信息
In recent years, the cognitive radar (CR) with waveform diversity has exhibited significant performance improvements over the traditional fixed waveform radar and has become an area of vigorous research and developmen...
详细信息
ISBN:
(纸本)9781849199940
In recent years, the cognitive radar (CR) with waveform diversity has exhibited significant performance improvements over the traditional fixed waveform radar and has become an area of vigorous research and development. A novel waveform selection strategy based on wind driven optimization (WDO) technique is proposed in this paper. Firstly, the predicted tracking Cramér-Rao Lower Bounds (CRLB) model is built based the Interacting Multiple Model Particle Filter (IMMPF) method. Then the waveform selection model between the waveform parameters and the tracking performance is introduced. Finally, the WDO technique is used to minimize the predicted CRLB for the waveform selection. The tracking accuracy is demonstrated in the Monte Carlo simulations. The results are validated through the comparison with other methods.
A new type of polarization sensitive interferometer is proposed,named the Delta interferometer,inspired by its geometry resembling the Greek letter *** main difference between the Delta interferometer and other existi...
详细信息
A new type of polarization sensitive interferometer is proposed,named the Delta interferometer,inspired by its geometry resembling the Greek letter *** main difference between the Delta interferometer and other existing interferometers,such as Michelson,Mach-Zehnder and Young's double-slit interferometers,is that the two interfering paths are asymmetrical in the Delta *** visibility of the first-order interference pattern observed in the Delta interferometer is dependent on the polarization of the incidental *** coherence theory is employed to interpret this phenomenon and single-mode continuous-wave laser light is employed to verify the theoretical *** theoretical and experimental results are *** Delta interferometer is a perfect tool to study the reflection of electromagnetic fields in different polarizations and may find applications in polarization-sensitive scenarios.
暂无评论