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Multi-Objective Bacterial Foraging Optimization Algorithm Based on Effective Area in Cognitive Emergency Communication Networks

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China Communications 2021年第12期18卷 252-269页

作者： Shibing Zhang Xue Ji Lili Guo zhihua bao School of Information Science and Technology Nantong UniversityNantong 226019China Xinglin College Nantong UniversityNantong 226008China

Cognitive emergency communication net-works can meet the requirements of large capac-ity,high density and low delay in emergency *** paper analyzes the properties of emergency users in cognitive emergency communi-cation networks,designs a multi-objective optimiza-tion and proposes a novel multi-objective bacterial foraging optimization algorithm based on effective area(MOBFO-EA)to maximize the transmission rate while maximizing the lifecycle of the *** the algorithm,the effective area is proposed to prevent the algorithm from falling into a local optimum,and the diversity and uniformity of the Pareto-optimal solu-tions distributed in the effective area are used to eval-uate the optimization ***,the dynamic preservation is used to enhance the competitiveness of excellent individuals and the uniformity and diversity of the Pareto-optimal solutions in the effective ***,the adaptive step size,adaptive moving direc-tion and inertial weight are used to shorten the search time of bacteria and accelerate the optimization *** simulation results show that the pro-posed MOBFO-EA algorithm improves the efficiency of the Pareto-optimal solutions by approximately 55%compared with the MOPSO algorithm and by approx-imately 60%compared with the MOBFO algorithm and has the fastest and smoothest convergence.

关键词： wireless communications emergency communications cognitive radio networks multi-objective optimization algorithm effective areas self-adaption

Novel spectrum sensing and access in cognitive radio networks

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Science China(Information Sciences) 2018年第8期61卷 228-230页

作者： Shibing ZHANG Yingdong HU Li ZHANG zhihua bao School of Electronics and Information Nantong University Nantong Research Institute for Advanced Communication Technologies

Dear editor,The throughput,delay and collision probability between the primary users(PUs)and secondary users(SUs)have been considered as the main performance measures in cognitive radio(CR)networks[1].The longer the s... 详细信息

关键词： net Novel spectrum sensing and access in cognitive radio networks CR

Joint Beamforming and Time Switching Designs for Energy-Constrained Cognitive Two-Way Relay Networks

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China Communications 2020年第5期17卷 110-118页

作者： Meijuan Zhang Shibing Zhang zhihua bao Wei Wang Xiaoge Zhang Yonghong Chen School of Information Science and Technology Nantong UniversityNantong 226019China Nantong Research Institute for Advanced Communication Technology Nantong 226019China Xinglin College Nantong UniversityNantong 226019China

In this paper, we investigate a joint beamforming and time switching(TS) design for an energy-constrained cognitive two-way relay(TWR) network. In the network, the energy-constrained secondary user(SU) relay employs TS protocol to harvest energy from the signals sent by the circuit-powered primary user(PU) transmitter, and then exploits the harvested energy to perform information forwarding. Our aim is to maximize the sum rate of SUs under the constraints of the data rate of PU, the energy harvesting and the transmit power of the SU relay. To determine the beamforming matrix and TS ratio, we decouple the original non-convex problem into two subproblems which can be solved by semidefinite relaxation and successive convex optimization methods. Furthermore, we derive closed form expressions of the optimal solutions for each subproblem, which facilitates the design of a suboptimal iterative algorithm to handle the original sum rate maximization problem. Simulation results are presented to illustrate the effectiveness and superior performance of the proposed joint design against other conventional schemes in the literature.

关键词： cognitive networks two-way relay sum rate energy harvesting beamforming

A Survey on Heliumspeech Communications in Saturation Diving

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China Communications 2020年第6期17卷 68-79页

作者： Shibing Zhang Lili Guo Hongjun Li zhihua bao Xiaoge Zhang Yonghong Chen School of Information Science and Technology Nantong UniversityNantong 226019China Nantong Research Institute for Advanced Communication Technology Nantong 226019China Xinglin College Nantong UniversityNantong 226019China

With the development of society and the progress of technology,more and more ocean activities are carried *** results in booming of deep-sea *** use of helium-oxygen mixture(as a kind of breathing gas)solves the physiological problems of divers in saturated diving,but it brings about the Heliumspeech voice communication problem,the drop of speech *** is no doubt that the effective speech communication must be provided for supporting the life and work of divers in *** paper describes the mechanism of forming heliumspeech,discusses the effects of pressure and helium environment on the speech spectrum,compares the pros and cons of the time-domain and frequency-domain unscrambling techniques,shows the challenges in heliumspeech ***,it briefly introduces the deep learning,and points out that deep learning/machine learning may be a perfectly unscrambling technique.

关键词： maritime communications saturation diving heliumspeech unscrambling challenging deep learning

COMBINED ADMISSION CONTROL AND SCHEDULING IN MULTI-SERVICE NETWORKS

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Journal of Electronics(China) 2010年第6期27卷 765-771页

作者： Qiu Gongan Zhang Guoan Xu Chen bao zhihua School of Electronics and Information Nanton9 University Nantong 226019 China National Mobile Communications Research Laboratory Southeast University Nanjing 210096 China

Providing the required metrics for different service respectively is a basic characteristic in multi-service networks. The different service can be accessed and forwarded differently to provide the different transmission performance. The state information between admission control and scheduling can be exchanged each other by the defined correlation coefficient to adjust the flow distribution in progress. The priority queue length measured by scheduler implicitly can describe the priority flows load. And the fair rate can describe the non-priority flows load. Different admission decision will be made according to the state of scheduler to assure the time-delay upper threshold for the priority flows under heavy load and the fairness for elastic flows in light load, respectively. The stability condition was conduced and proved. Simulation results show the policy can ensure both the delay for the priority flows and the minimal throughput for non-priority flows.

关键词： Admission control Scheduling F^lzzy flow-awareness Multi-service networks

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文澜阁《四库全书》抗战苦旅线始末

图书与情报 2011年第4期 F0002-F0002,F0003页

作者：鲍志华富阳市图书馆浙江富阳311400

文章陈述了文澜阁《四库全书》抗日大转移及西迁过程,指出重建文澜阁《四库全书》抗战苦旅线的意义。

关键词：文澜阁《四库全书》抗战转移

能量效率和碰撞概率联合优化的协作频谱感知算法

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数据采集与处理 2017年第5期32卷 988-996页

作者：倪丹艳包志华张士兵南通大学电子信息学院南通226019

协作频谱感知能提高认知无线电网络的感知性能。随着认知网络频谱感知性能的提高,一方面感知网络将会消耗更多的能量;另一方面次用户拥有更多的机会接入授权频谱,次用户的吞吐量不断增加,同时在通信过程中主用户与次用户发生碰撞的概率... 详细信息

协作频谱感知能提高认知无线电网络的感知性能。随着认知网络频谱感知性能的提高,一方面感知网络将会消耗更多的能量;另一方面次用户拥有更多的机会接入授权频谱,次用户的吞吐量不断增加,同时在通信过程中主用户与次用户发生碰撞的概率也不断增大。本文提出了一种联合优化能量效率和碰撞概率的协作频谱感知算法,通过最优感知检测点判断节点所处信道状态,融合中心舍弃信道状态不好的节点使其不参与数据融合,既消除了信道状态不好的节点对全局判决的不良影响,又提高了能量利用率。仿真结果表明,该算法提高了网络的频谱检测性能,并延长了感知网络的生命周期。

关键词：认知无线电协作频谱感知能量有效性碰撞概率

空间分集技术在CFBM-MC-CDMA系统中的应用研究

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数据采集与处理 2002年第4期17卷 366-370页

作者：包志华章国安南通工学院信息工程系南通226007

给出了一种简单的空时编码方案 ,提出了应用该方案的基于复数滤波器组调制的多载波码分多址( CFBM-MC-CDMA)通信系统的模型。理论分析可知 ,采用空时编码天线发射分集技术的 CFBM-MC-CDMA系统与未采用天线分集的系统相比 ,其多址干扰功... 详细信息

给出了一种简单的空时编码方案 ,提出了应用该方案的基于复数滤波器组调制的多载波码分多址( CFBM-MC-CDMA)通信系统的模型。理论分析可知 ,采用空时编码天线发射分集技术的 CFBM-MC-CDMA系统与未采用天线分集的系统相比 ,其多址干扰功率降低了一半。仿真结果表明 ,系统采用天线分集技术能显著提高其误比特率性能 ,在低信噪比区域 ,系统采用两天线分集接收的性能要比采用两天线分集发射的性能好得多。

关键词：空间分集技术 CFBM-MC-CDMA系统空时编码无线移动通信系统手机信号传输速率复数滤波器组

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一种低信噪比下的高精度射频指纹变换方法

数据采集与处理 2015年第5期30卷 1036-1042页

作者：江立伟袁红林严燕包志华南通大学电子信息学院南通226019 南通大学计算机科学与技术学院南通226019

针对低信噪比时无线发射机的射频指纹识别问题,提出了一种基于功率放大器非线性系数的射频指纹变换方法。基于功放非线性与无线信道模型,以及通信帧的先验知识,利用卡尔曼滤波方法估计功放模型的非线性系数,并将系数矢量作为射频指纹,... 详细信息

针对低信噪比时无线发射机的射频指纹识别问题,提出了一种基于功率放大器非线性系数的射频指纹变换方法。基于功放非线性与无线信道模型,以及通信帧的先验知识,利用卡尔曼滤波方法估计功放模型的非线性系数,并将系数矢量作为射频指纹,用于相应发射机的硬件识别。理论分析与数值仿真表明:新的射频指纹变换方法,在低信噪比时仍具有高精度的优点。提出的射频指纹变换方法可应用于无线或有线通信个体的物理层融合识别等。

关键词：功放非线性卡尔曼滤波射频指纹低信噪比