检索结果-内蒙古大学图书馆

2022 IEEE GLOBECOM Workshops, GC Wkshps 2022

作者： Chen, Mingkai Lu, Hang Xu, Xinmian Tang, Xiao-Wei Fan, Qiang Lou, Chong Nanjing University of Posts and Telecommunications Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing210003 China Huawei Technologies Co. Ltd Shanghai201206 China

ISBN: (纸本)9781665459754

Nowadays, Industrial Internet of Things (IIoT) has been considered as a promising technology to provide data acquisition for Industry 4.0. However, packet compression in IIoT still exists multi-protocol heterogeneity, lack of robustness, compression ratio to be improved and some other issues. Inspired by the above reasons, in this paper we investigate a novel deep packet compression for IIoT in order to reduce redundant data while maintaining high robustness. For one thing, facing to protocol heterogeneity, we propose Universal Dynamic Ethernet Header Compression (UDEHC) to embrace five major protocols. For another, we provide Generalized Deduplication using Static Dictionary (GDSD) scheme to obtain 16-20% compression improvement and high reliability. Extensive simulation results are provided to validate the theoretical analysis and demonstrate the effectiveness in wireless circumstance. © 2022 IEEE.

关键词： Internet of things

来源：评论

学校读者我要写书评

暂无评论

Single-channel speech separation based on NLMSE quasi-KLT bases

Single-channel speech separation based on NLMSE quasi-KLT ba...

引用

2011 International Conference on wireless communications and Signal Processing, WCSP 2011

作者： Guo, Haiyan Yang, Zhen Zhu, Weiping College of Engineering Nanjing Agricultural University Nanjing Jiangsu 210031 China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210003 China

ISBN: (纸本)9781457710100

In this paper, we propose a new single-channel speech separation algorithm by l0 optimization using nonhomogeneous linear mean square estimation (NLMSE) quasi-KLT basis. First, we propose to construct NLMSE quasi-KLT bases from the single-channel mixture by diagonalizing the approximate autocorrelation matrices of speech sources, which are constructed by a linear combination of generated templates. Second, based on the NLMSE quasi-KLT bases, single-channel speech separation is performed by l0 optimization. Finally, simulation results demonstrating the effective performance of single-channel separation of two speech sources using the NLMSE quasi-KLT bases are presented. © 2011 IEEE.

关键词： Mathematical transformations

来源：评论

学校读者我要写书评

暂无评论

Distributed cooperative spectrum sensing based on consensus among reliable secondary users

Distributed cooperative spectrum sensing based on consensus ...

引用

International Conference on wireless communications and Signal Processing, WCSP 2015

作者： Wei, Ji Haixi, Cao Zhen, Yang College of Telecommunication and Information Engineering Nanjing University of Posts and Telecommunications Nanjing210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing210003 China

ISBN: (纸本)9781467376860

Cooperative spectrum sensing (CSS) is a key technology to improve the sensing performance. Fully distributed CSS has been applied in cognitive radio ad hoc networks with good detection performance. However, when the number of secondary users (SUs) is large and the range of cognitive radio network is wide, sensing overheads (e.g., time and energy consumption) will increase correspondingly. Meanwhile, the reliability of SUs will potentially influence the detection performance. In this paper, a fully decentralized cooperative spectrum sensing scheme based on consensus theory among reliable SUs is proposed. Firstly, belief vector is used for distinguishing the reliable SUs from the unreliables. Secondly, the sub network with most reliable SUs is chose as reliable region, in which sensing information of reliable SUs can be exchanged among their one-hop neighbors with finite iterations based on consensus theory. Lastly, SUs in consensus network will get a consensus sensing outcome which will be shared with SUs outside of consensus network. The proposed scheme does not need the prior knowledge of primary user in the entire process. Simulation results show that the proposed scheme has better detection performance than traditional methods. © 2015 IEEE.

关键词： Energy utilization

来源：评论

学校读者我要写书评

暂无评论

An Improved Comentropy-based Multi-objective Optimization Algorithm

An Improved Comentropy-based Multi-objective Optimization Al...

引用

第23届过程控制会议

作者： Kun Wang Linlin Wang Yan Liu Yuhua Zhang Huang Guo Yue Yu Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Pos College of automation and electrical engineering Nanjing University of Technology Nanjing 210009 Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Pos

To solve the increasing run-time complexity with the growth of population solutions in PESA, an evolutionary algorithm of multi-objective optimization, we present a comentropy- based PESA algorithm (C-PESA). With this algorithm, the gradual development and maturity of the solution sets can be observed with the continuous calculation of entropy values to determine whether to stop the optimization process or not, which reduces the run-time complexity to some extent. Simulation results show that the computational effort of C-PESA increases at a linear order with the increasing number of solutions, and the efficiency of evolutionary algorithm shows improvement.

关键词： PESA algorithm comentropy multi-objective optimization evolutionary algorithm Pareto-optimal run-time complexity

来源：评论

学校读者我要写书评

暂无评论

Design and implementation of low power consumption wireless pressure transmitter monitoring system

Design and implementation of low power consumption wireless ...

引用

2009 International Conference on Computational Intelligence and Software Engineering, CiSE 2009

作者： Wang, Quan Liu, Zhe Wang, Ping Wei, Min Ministry of Education Key Lab. of Network Control and Intelligent Instrument Chongqing University of Posts and Telecommunications Chongqing China Key Laboratory of Wireless Sensor Network and Communication Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China

ISBN: (纸本)9781424445073

Recent years have seen a burgeoning interest in industrial wireless network with applications ranging from filed monitoring to controlling. Industrial wireless network have several important attributes that require special attention to device design which include the need for inexpensive, long-lasting, highly reliable devices coupled with very low performance requirements. Aimed at key issues of limited battery energy and reduction power consumption, combined with the soul of intelligent instrumentation a low-power consumption design of wireless pressure transmitter was proposed and realized. This paper outlined the system design, and introduced the design of the network protocol stack structure with sleep-wakeup mechanism in detail. The testing and analysis results show that the system has both high stability and great low-power consumption. ©2009 IEEE.

关键词： network protocols

来源：评论

学校读者我要写书评

暂无评论

Task Classification Unloading Algorithm for Mobile Edge Computing in Smart Grid 5

Task Classification Unloading Algorithm for Mobile Edge Comp...

引用

5th IEEE Advanced Information technology, Electronic and Automation Control Conference, IAEAC 2021

作者： Xing, Ningzhe Wu, Peng Jin, Shen Yao, Jiming Xu, Zhichen State Grid Jibei Electric Power Co. Ltd Beijing China Nanjing University of Posts and Telecommunications Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of Education China

With the rapid development of smart grid, the data generated by grid services are growing rapidly, and the requirements for time delay are becoming more and more stringent. The storage and computing capacity of the existing terminal equipment can not meet the needs of high bandwidth and low delay of the system at the same time. Fortunately, mobile edge computing (MEC) can provide users with nearby storage and computing services at the network edge, this can give an option to simultaneously meet the requirement of high bandwidth and low delay. Aiming at the problem of service offload scheduling in edge computing, this paper proposes a delay optimized task offload algorithm based on task priority classification. Firstly, the priority of power grid services is divided by using analytic hierarchy process (AHP), and the processing efficiency and quality of service of emergency tasks are guaranteed by giving higher weight coefficients to delay constraints and security levels. Secondly, the service is initialized and unloaded according to the task preprocessing time. Finally, the reasonable subchannel allocation is carried out based on the task priority design decision method. Simulation results show that compared with the traditional approaches, our algorithm can effectively improve the overall system revenue and reduce the average user task delay. © 2021 IEEE.

关键词： computation offloading

来源：评论

学校读者我要写书评

暂无评论

Secrecy outage analysis of integrated satellite-terrestrial relay networks 24

Secrecy outage analysis of integrated satellite-terrestrial ...

引用

24th Asia-Pacific Conference on communications, APCC 2018

作者： Tao, Xiangshuai Huang, Qingquan Yin, Chunyan Cheng, Guoqiang Ouyang, Jian Liu, Xin College of Communications Engineering Army Engineering University of PLA Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing China Nanjing Institute of Telecommunication Technology Nanjing China

ISBN: (纸本)9781538669280

This paper addresses the secure transmission problem of an integrated satellite-terrestrial relay networks (ISTRN), where multiple malicious eavesdroppers attempt to overhear the confidential signals from the satellite to a terrestrial user. Here, the relay is employed with multiple antenna and the decode-and-forward protocol is used. By supposing that the perfect instantaneous channel state information (CSI) of satellite-relay link and the statistical CSI of relay-user and relay-eavesdropper links are availab.e at the relay, an optimization problem is first formulated to maximize the secrecy rate of the ISTRN. Then, the secure transmission scheme is designed to solve the optimization problem and obtain the closed-form beamforming weight vector. To further insight the secrecy performance of the proposed scheme, we derive the analytical expressions of the secrecy outage probability (SOP) of the considered ISTRN, where the satellite-relay link undergoes the shadowed-Rician fading, and the links of relay to user as well as eavesdroppers undergo the correlated Rayleigh fading. Finally, numerical results are given to confirm the superiority of the proposed scheme and the validity of the SOP analysis. © 2018 IEEE.

关键词： Beamforming

来源：评论

学校读者我要写书评

暂无评论

Single image super resolution through neighbor embedding with non-local means and field of experts

引用

Journal of Computational Information Systems 2014年第5期10卷 1973-1981页

作者： Cao, Mingming Gan, Zongliang Cui, Ziguan Guo, Quanzhan Zhu, Xiuchang Key Lab. of Broadband Wireless Communication and Sensor Network Technology Min. of Edu. Image Process and Image Communication Lab. Nanjing University of Posts and Telecommunications Nanjing 210003 China

Super resolution (SR) through neighbor embedding is recognized as an effective way to produce a high resolution (HR) image. However, this learning-based method is clumsy at preserving sharper edges and suppressing unwanted artifacts. To reduce these artifacts, in this paper we proposed a novel single image super resolution through neighbor embedding with non-local means (NLM) and field of experts. The proposed SR approach is based upon an observation that small patches in natural images tend to redundantly repeat themselves many times, which could be exploited to improve the image reconstruction quality. In addition, considering the existence of un-normal texture in the reconstruction of HR images, which reduce the accuracy of the search process, we apply the Field of Experts model to remove the un-normal texture, which could also make the final image match the statistical characteristics of natural images. The experimental results show that the proposed method can achieve comparable performance to other leading algorithms. © 2014 Binary Information Press.

关键词： Image reconstruction

来源：评论

学校读者我要写书评

暂无评论

A fast covariance matrix reconstruction method for two-dimensional direction-of-arrival estimation

A fast covariance matrix reconstruction method for two-dimen...

引用

IEEE International Conference on Acoustics, Speech and Signal Processing

作者： Xiaohuan Wu Wei-Ping Zhu Jun Yan Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications China

ISBN: (纸本)9781509041183

In this paper, a new method for two-dimensional (2-D) direction-of-arrival (DOA) estimation is proposed. We first reconstruct the covariance matrix of the coarray with block-Toeplitz structure and then retrieve the DOAs. Our method is computationally efficient as supported by the derived closed-form expression for the estimated covariance matrix. Unlike other methods, which require fully loaded arrays, the proposed method can be applied in the case of common rectangular arrays with arbitrary geometries. The estimated azimuth and elevation angles are automatically paired. Moreover, our method is of high estimation accuracy and immune to the angle ambiguity effect. Numerical simulations are carried out to verify the effectiveness of the proposed method.

关键词： 2-D DOA estimation Toeplitz-block-Toeplitz structure generalized rectangular array (GRA)

来源：评论

学校读者我要写书评

暂无评论

AN IMPROVED EPON UPSTREAM TRANSMISSION SCHEME WITH ZERO INTER-PERIOD IDLE LOSS

引用

Journal of Electronics(China) 2011年第4期28卷 664-669页

作者： Shen Jianhua Guo Hongmei Mi Zhengkun Key Lab of Broadband Wireless Communication and Sensor Network Technology （ NUPT） Ministry of Education Nanjing University of Posts and Telecommunications Nanjing 210003 China

Existing Ethernet Passive Optical network(EPON) Dynamic Bandwidth Allocation(DBA) algorithms suffer from the disadvantage of idle time loss,which lower the upstream bandwidth *** letter proposes an improved upstream transmission scheme with idle-time eliminating *** analysis and numerical calculation prove that the improved scheme can ef-fectively eliminate the idle time and enhance the efficiency of upstream link *** results have shown that the bandwidth utilization can be raised up to 15% in heavy-load scenarios while the time delay performance of Assured Forwarding(AF) and Best Effort(BE) services are improved simultaneously.

关键词： Ethernet Passive Optical network(EPON) Dynamic Bandwidth Allocation(DBA) algorithm Channel transmission scheme Idle time eliminating

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：