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Chinese Journal of Electronics 2017年第3期26卷 600-607页

作者： TANG Rui ZHAO Jihong qu hua School of Electronics and Information Engineering Xi'an Jiaotong University School of Communication and Information Engineering Xi'an University of Posts and Telecommunications

Device-to-Device(D2D)communication is viewed as an emerging technology in the fifth generation systems to fully explore the proximate gain residing in local communicating *** the interference imposed to the existing Cellular links(C-link)should be addressed in the optimization for underlaid D2D links(D-link).There is a performance tradeoff between Energy conservation(EC)and the number of links with satisfied quality-of-service(Qo S)requirement or System capacity(SC).We aim to weight the above tradeoff for D-links by specifying it into optimizing EC on the condition that SC is maximized and Qo S requirements of C-links are fully guaranteed.A threestage joint power control and channel assignment mechanism is proposed including feasibility check,SC maximization and greedy optimization for *** to numerical results,we illustrate the necessity to conduct our performance tradeoff and observe the gain when multiple resource variables are in elaborate cooperation.

关键词： Device-to-Device(D2D) communication Energy conservation User fairness Resource allocation

Energy-Efficient Cooperative Strategy in RF Energy Harvesting Cognitive Radio Network

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Chinese Journal of Electronics 2019年第3期28卷 651-657页

作者： YAN Feiyu ZHAO Jihong qu hua XU Xiguang School of Electronic and Information Engineering Xi'an Jiaotong University School of Communication and Information Engineering Xi'an University of Posts and Telecommunications

Energy-efficient cooperative spectrum sharing has become a new trend based on financial and environmental considerations. We focus on a novel energy-efficient cooperative strategy in a Radio frequency(RF) energy harvesting cognitive radio network, where the Secondary user(SU) provides energy supply and relaying assist for the Primary user(PU) in exchange for the transmission opportunities. On the basis of energy and information cooperation, an Energy efficiency(EE)maximization non-convex problem for SU is formulated under the PU’s quality of service(QoS) requirement and energy-causality constraint. With the aid of Dinkebalch’s method and convex optimization technique, a joint time and power allocation scheme is proposed. Numerical results show that the proposed scheme achieves higher SU’s EE and better PU’s QoS guarantee compared to the scheme in which the SU only provides energy for the PU’s transmission.

关键词： Cognitive radio network Radio frequency(RF) energy harvesting Cooperative communication Energy efficiency Resource management

A Robust Fuzzy Time Series Forecasting Method Based on Multi-partition and Outlier Detection

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Chinese Journal of Electronics 2019年第5期28卷 899-905页

作者： qu hua ZHANG Yanpeng LIU Wei ZHAO Jihong School of Software Engineering Xi'an Jiaotong University School of Electronics and Information Engineering Xi'an Jiaotong University School of Communication and Information Engineering Xi'an University of Posts and Telecommunication

We propose a robust fuzzy time series forecasting method based on multi-partition approach and outlier detection for forecasting market prices. The multipartition approach employs a specific partition criterion for each dimension of the time series. We use a Gaussian kernel version fuzzy C-means clustering to construct the fuzzy logic relationships and detect the outliers by calculating the grade of membership. We apply an additional model, which is trained on the set of outliers by Levenberg-Marquardt algorithm, for forecasting the outliers in testing set. The experiment results show that the proposed method improves the robustness and the average forecasting accuracy rate.

关键词： Fuzzy time series Multi-partition approach Outlier detection

Joint Optimization of Channel Allocation,Link Assignment and Power Control for Device-to-Device Communication Underlaying Cellular Network

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China Communications 2015年第12期12卷 92-100页

Device-to-Device(D2D) communication has been proposed to facilitate cellular network with system capacity(SC) and quality of service(QoS).We consider the design of link assignment(LA),channel allocation(CA)and power control(PC) in D2D-aided content delivery scenario for both user fairness(UF)and system throughput(ST) under QoS *** to the complexity of the problem,we decompose it into two components:CA is formulated from graph perspective to mitigate severe co-channel interference,which turns out to be the Max K-cut problem;LA and PC are jointly optimized to utilize the gain achieved from CA for supreme performance,and specifically,genetic algorithm(GA) is adopted to optimize LA,but when deriving the fitness of each chromosome,PC optimization will be *** to numerical results,we elucidate the efficacy of our scheme.

关键词： decompose utilize links formulated constraint facilitate optimize requirement fitness throughput

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Virtual Network Embedding Algorithm for Load Balance with Various Requests

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Chinese Journal of Electronics 2014年第2期23卷 382-387页

作者： WANG Li qu hua ZHAO Jihong School of Electronic and Information Engineering Xi'an Jiaotong University School of Communication and Information Engineering Xi'an University of Posts and Telecommunications

Virtual network embedding(VNE) is a crucial technology for network virtualization to allocate network resource. Virtual network request in which node and link resource have great disparity will lead to unbalanced resource distribution and lower acceptance ratio of virtual network requests. In this paper, we provide a virtual network embedding algorithm for load balance with various requests. It maps virtual nodes to substrate nodes of which node link residual resource ratio is closest to that of virtual nodes, and then maps the virtual link to physical path using shortest path first algorithm with the link node residual resource ratio constraint. Simulation shows that the provided algorithm can get higher acceptance ratio and network resource utilization for load balance.

关键词： Virtual network embedding Load balance Heuristic algorithm Node mapping Link mapping

Energy-Efficient Outage Capacity in Sensing-Based Spectrum Sharing Cognitive Radio Networks

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Chinese Journal of Electronics 2018年第6期27卷 1271-1276页

Energy efficiency(EE) is an important metric for a Cognitive radio network(CRN). We focus on the EE maximization problem in a sensing-based spectrum sharing CRN for delay-sensitive applications. With the aid of one-dimension exhaustive search, fractional programming and Lagrange duality method, two energy-efficient optimal sensing time and power allocation policies are derived with the consideration of Average/Peak transmit power(ATP/PTP) constraints and Average interference power(AIP) constraints, respectively. Simulation results show that the proposed policies can achieve higher EE compared to the conventional spectrum sharing schemes.

关键词： Cognitive radio network(CRN) Energy efficiency(EE) Sensing-based spectrum sharing Power allocation

Robust Digital Non-Linear Self-Interference Cancellation in Full Duplex Radios with Maximum Correntropy Criterion

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China Communications 2016年第9期13卷 53-59页

作者： Zhirong Luan hua qu Jihong Zhao Badong Chen School of Electronic and Information Engineering Xi'an Jiaotong University School of Telecommunication and Information Engineering Xi'an University of Posts and Telecommunications

Full duplex radio increases the frequency efficiency but its performance is limited by the self-interference （SI）. We first analyze the multiple noises in the full duplex radio system and model such noises as an α - stable distribution. Then we formulate a novel non-Gaussian SI problem. Under the maximum correntropy criterion （MCC）, a robust digital non-linear self-interference cancellation algorithm is proposed for the SI channel estimation. A gradient descent based algorithm is derived to search the optimal solution. Simulation results show that the proposed algorithm can achieve a smaller estimation error and a higher pseudo signal to interference plus noise ratio （PSINR） than the well-known least mean square （LMS） algorithm and least square （LS） algorithm.

关键词： full duplex radio robust estimation digital non-linear self-interference can- cellation a-stable noise correntropy

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Methodological challenges to human medical study

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Frontiers of Medicine 2014年第3期8卷 328-336页

作者： Yixin Zhong Baoyan Liu hua qu Qi Xie Beijing University of Posts and Telecommunications Beijing 100876 China China Academy of Traditional Chinese Medicine Beijing 100700 China

With the transformation of modern medicinal pattern, medical studies are contronted with methodological challenges. By analyzing two methodologies existing in the study of physical matter system and information system, the article points out that traditional Chinese medicine （TCM）, especially the treatment based on syndrome differentiation, embodies information conception of methodological positions, while western medicine represents matter conception of methodological positions. It proposes a new way of thinking about combination of TCM and western medicine by combinating two kinds of methodological methods.

关键词： medical paradigm traditional Chinese medicine western medicine scientific view scientific methodology

Infrared Radiance Simulation and Application under Cloudy Sky Conditions Based on HIRTM

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Journal of Electronic Science and Technology 2019年第2期17卷 161-170页

作者： Jian-hua qu Jun-Jie Yan Mao-Nong Ran huayun Shinetek Company China Meteorological Administration

An algorithm based on hyperspectral infrared cloudy radiative transfer model (HIRTM) is introduced and a simulation method for infrared image of the generation geostationary meteorological satellite is proposed. Based on the parameters from weather research and forecast (WRF), such as the water content, atmospheric temperature, and humidity profile, the simulation data for the advanced Himawari imager (AHI) infrared radiative (IR) channels of Himawari-8 are obtained. Simulated results based on HIRTM agree well with the observed data. Further, the movement, development, and change of the cloud are well predicated. And the simulation of IR cloud image for the weather forecast has been obtained. This paper provides an improved method for evaluation and improvement of regional numerical model for weather forecast.

关键词： Hyperspectral infrared cloudy radiative transfer model (HIRTM) regional numerical model satellite cloud image

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Analysis and Control of Two-Layer Frenkel–Kontorova Model

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Chinese Physics Letters 2011年第11期28卷 12-15页

作者： TANG Wen-Yan qu Zhi-hua GUO Yi School of Information Science and Engineering Central South UniversityChangsha 410075 School of Electrical Engineering and Computer Science University of Central FloridaOrlandoFL 32816USA Department of Electrical and Computer Engineering Stevens Institute of TechnologyHobokenNJ 07030USA

A one-dimensional two-layer Frenkel–Kontorova model is ***,a feedback tracking control law is ***,the boundedness result for the error states of single particles of the model is derived using the Lyapunov ***,the motion of single particles can be approximated analytically for the case of sufficiently large targeted *** illustrate the accuracy of the derived results.

关键词： Method boundedness sufficiently