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15th IEEE International Conference on Wireless communications and Signal Processing, WCSP 2023

作者： Wang, Lei Su, Yufei Dou, Haie Cui, Jingwu Zheng, Baoyu Nanjing University of Posts and Telecommunications School of Communications and Information Engineering Nanjing China Nanjing University of Posts and Telecommunications Ministry of Education Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing China

ISBN: (纸本)9798350324662

Offloading for 5G intelligent terminals is an important requirement of mobile edge computing (MEC), which can reduce the load of terminal devices and provide more powerful computing power and services. However, due to the interference between different users and the waste of a lot of resources, the role of MEC is greatly limited. In the article, energy-saving blockchain technology is introduced into the user-centric MEC (UC-MEC) system. However, in UC-MEC, it is necessary to comprehensively consider task offloading and energy consumption optimization in the consensus process to improve overall energy efficiency. To solve these problems, a new offloading model of 5G intelligent terminal is proposed, which realizes safe and efficient resource utilization by jointly optimizing the bandwidth and computing resource allocation of access point (AP). The research also proposed a resource consensus mechanism based on Zookeeper atomic broadcast (RC-ZAB), and the parallel optimization framework of relaxed hybrid alternative direction method of multipliers (RH-ADMM) to solve the problems of resource transaction and energy consumption optimization. The experimental results show that compared with the comparison method, the total energy consumption of the proposed method is reduced by 41.39% at most, and the total delay is reduced by 29.80% at most. © 2023 IEEE.

关键词： blockchain Mobile edge computing resource consensus task offloading user-centric

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A Context-aware Data Processing Model in power communication networks

A Context-aware Data Processing Model in power communication...

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2015 IEEE/CIC International Conference on communications in China - Workshops, CIC/ICCC 2015

作者： Guo, Yunfei Wang, Kun Liu, Shidong Guo, Jinghong Lu, Heng Smart Grid Research Institute State Grid Nanjing210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing210003 China

ISBN: (纸本)9781467397018

The power communication networks is a relatively complex system with high security, which is performed in a number of ways, such as safety of power generation equipment, security of transmission and distribution lines, as well as data transmission security. The core of power communication networks security is context-aware data processing. With continuously extending in scale of the power communication networks, power communication data process become more complicated. In order to realize automatization of data processing of the power communication networks, this paper proposed a Context-aware Data Processing Model in power communication networks (CDPM). In this three-layer architecture, a Distributed Database Based on Data Categorization (DDB-DC) is designed in storage layer, which is able to choose the most efficient approach to store the context-aware data from the gathering layer according to different context-aware data types. Then, a Real-time Feature Extraction algorithm (RFE) for context-aware systems is presented in the computing layer to process the context-aware data stream. The model is a new data processing method in power communication networks. © 2015 IEEE.

关键词： Feature extraction

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The Phase Sensitivities for Different Phase-Shift Configurations in an SU(1,1) Interferometer

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communications in Theoretical Physics 2019年第12期71卷 1435-1442页

作者： Fan Wang Wei Zhong Lan Zhou Yu-Bo Sheng Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China School of Science Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsMinistry of EducationNanjing 210003China

We theoretically study the phase sensitivities of two different phase-shift configurations in an SU(1,1)interferometer with coherent■squeezed vacuum *** to quantum Cramér-Rao theorem,we analytically obtain the ultimate phase sensitivities for two types of phase shift accumulating in one-and *** with the case of one-arm phase shift,the model with phase shift encoding in both arms may provide a better sensitivity when the strength of squeezed vacuum state is large ***,we discuss the achievable sensitivities with the homodyne measurement by invoking of error-propagation *** addition,we study the effect of internal and outernal photon losses on the phase sensitivity of the SU(1,1)interferometer and find that the unbalanced interferometer is helpful to improve precision even with high external losses.

关键词： SU(1,1)interferometer quantum Fisher information one-and two-arm phase shifts Homodyne measurement

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C-PESA: An improved comentropy-based PESA algorithm

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2012 International Conference on Electrical and Electronics Engineering, ICEE 2012

作者： Wang, Kun Wang, Linlin Zhang, Yuhua Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing 210003 China College of Overseas Nanjing University of Posts and Telecommunications Nanjing 210003 China

ISBN: (纸本)9781461449805

To solve the increasing complexity with the growth of solution sets number in PESA, we present a comentropy-based PESA algorithm (C-PESA), which is an evolutionary algorithm of multi-objective optimization. In C-PESA, the gradual development and maturity of the solution sets can be observed with the continuous calculation of entropy values. This determines whether to stop the optimization process, and accordingly simplifies the run-time complexity of the algorithm to a certain degree. Simulation results show that the calculation amount of C-PESA increases linearly with the increasing number of population, and the efficiency of evolutionary algorithm also improves. © 2014 Springer Science+Business Media New York.

关键词： Evolutionary algorithms

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Experimental verification of NP-complete problems via linear optics 13

Experimental verification of NP-complete problems via linear...

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13th International Conference on Wireless communications and Signal Processing, WCSP 2021

作者： Li, Jian Liu, Tongjun Hou, Tianlei Wang, Xiaorun Liu, Chenxi Dai, Pan Wang, Qin Nanjing University of Posts and Telecommunications Inst. of Quant. Info. and Technology Broadband Wireless Communication and Sensor Network Technology National Engineering Research Center Key Lab of Ministry of Education Telecommunication and Networks Nanjing China

ISBN: (纸本)9781665407854

Non-deterministic polynomial (NP)-complete problems are collections of intractable problems for classical computers, but they may be easier to solve for quantum computers. Considering that practical quantum computers and networks are still under development, it is necessary to find alternatives to solve these problems. Simulations with linear optics offer a good choice since much of the research on quantum information is executed with this approach. In this work, based on Aaronson's protocol (Theory Comput, 5, 1, 2009) ad Arrazola et. al.'s linear optics scheme (npj Quantum Inf, 78, 022310, 2018), we present a demonstration of the NP-complete 2-out-of-4 SAT problem for 4 variables. The experimental results show that NP-complete problems can be well simulated through linear optical systems. © 2021 IEEE.

关键词： Quantum optics

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A code dissemination protocol of low energy consumption

A code dissemination protocol of low energy consumption

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2012 International Conference on Web Information Systems and Mining, WISM 2012

作者： Wang, Haiyong Yang, Geng Xu, Jian Chen, Zhengyu Yang, Zhen Key Lab of Broadband Wireless Communication Sensor Network Technology of Ministry of Education Nanjing University of Post and Telecommunications Nanjing 210003 China College of Internet of Things Nanjing University of Posts and Telecommunications Nanjing 210003 China

ISBN: (纸本)9783642334689

Dissemination and update of the code image plays an important role in application of the Internet of Things (IoT). As a part of the IoT, Wireless sensor networks should provide the code dissemination. The commonly used method for periodical broadcasting metadata packages to determine whether code dissemination is needed consumes excessive energy. So a low energy consumption code dissemination protocol is proposed for this issue. That is whether code dissemination is necessary can be determined when the sensor node is under normal communication. The simulation result shows that the proposal in this article has reduced the energy consumption when the network needs code dissemination. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Metadata

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A novel neural network optimized by quantum genetic algorithm for signal detection in MIMO-OFDM systems

A novel neural network optimized by quantum genetic algorith...

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IEEE Symposium on Computational Intelligence in Control and Automation

作者： Li, Fei Zhou, Min Li, Haibo Institute of Signal Processing and Transmission Key Lab. of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing China Department of Applied Physics and Electronics Umeå University Umeå Sweden

ISBN: (纸本)9781424499038

Neural networks can easily fall into a local extremum and have slow convergence rate. Quantum Genetic Algorithm (QGA) has features of small population size and fast convergence. Based on the investigation of QGA, we propose a novel neural network model, Radial Basis Function (RBF) networks optimized by Quantum Genetic Algorithm (QGA-RBF model). Then we investigate the performance of the proposed QGA-RBF on solving MIMO-OFDM signal detection problem. A novel signal detector based on QGA-RBF for MIMO-OFDM system is also proposed. The simulation results show that the proposed detector has more powerful properties in bit error rate than QGA based detector, RBF based detector and MMSE algorithm based detector, namely a 4-6 dB gain in performance can be achieved. The performance of the proposed detector is closer to optimal, compared with the other detectors. © 2011 IEEE.

关键词： Orthogonal frequency division multiplexing

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Feedback free distributed video coding rate control algorithm

Feedback free distributed video coding rate control algorith...

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International Conference on Information technology and Computer Application Engineering, ITCAE 2014

作者： Zhang, Deng Yin Ma, Teng Sci-tech Park of Internet of Things Nanjing University of Posts and Telecommunication Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunication Ministry of Education Nanjing China

ISBN: (纸本)9781138027176

In this paper, based on the feedback free distributed video coding system, a rate control algorithm was proposed for Wyner-Ziv frames. First, calculate the maximum correlation of coefficient band level between the source WZ frames and adjacent key frames in DCT domain, and the quantization matrix was determined based on maximum correlation and the QP of the key-frames;then, according to the generated low-complexity side information and source WZ frame with DCT transformation and quantization, allocate the bit plane rate. Experimental results show, compared with the existing rate control algorithm without feedback channel, the proposed algorithm can effectively improve the Rate-Distortion performance of the feedback free system with little additional complexity. © 2015 Taylor & Francis Group, London.

关键词： Feedback

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Energy-optimized 5G dual connectivity radio resource allocation 2

Energy-optimized 5G dual connectivity radio resource allocat...

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2nd IEEE International Conference on Electronics technology, ICET 2019

作者： Ying, Guo Qingmin, Meng Xiaoming, Wang Ministry of Education College of Telecommunications Information Engineering Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing210003 China National Mobile Communications Research Lab Southeast University Nanjing210096 China

ISBN: (纸本)9781728116181

Non-independent networking of 5G NSA (Non-Standalone) is receiving wide attention. This paper considers an NSA architecture in which a 4G base station is used as the primary station and a newly deployed 5G base station is used as the secondary station. Machine-type communication and vehicle networking applications place stringent requirements on end-to-end delay of 5G NSA like systems. Due to limited computing power, part of the terminal data needs to be uploaded to the edge cloud to perform intensive calculations. An optimized radio resource allocation scheme is proposed for dual connectivity transmission under 5G NSA. Second, the relevant handover strategies are also evaluated. Computer simulation results show that compared with single-connection transmission, dual-connection transmission can significantly improve the energy consumption performance of the transmission scheme under a time delay constraint. © 2019 IEEE.

关键词： Mobile edge computing

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A novel clustering mechanism based on image-oriented correlation coefficient for wireless multimedia sensor networks

A novel clustering mechanism based on image-oriented correla...

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2012 International Conference on Web Information Systems and Mining, WISM 2012

作者： Wu, Rong Wang, Ruchuan Sha, Chao Qian, Liyang College of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing 210003 China

ISBN: (纸本)9783642334689

Wireless multimedia sensor networks consist of unattended multimedia nodes with limited storage, energy and computation and communication capabilities. And energy is the most crucial resource for nodes. Clustering technique has been proven to be an effective approach for datagathering in wireless multimedia sensor networks. Therefore, this paper presents a novel clustering mechanism based on image-oriented correlation coefficient to reduce redundancy transmission so as to conserve network energy. And the aim is achieved through taking advantage of the correlation coefficient of captured images and RSSI value of nodes to avoid excessive computation and transmission. Moreover, a new cluster header election method is also presented to make the network's load balance on energy. The simulation results show that the correlation coefficient threshold greatly affects the number and average size of clusters. And compared with another clustering algorithm based on overlapping FoVs, our clustering mechanism is more effective in prolonging network lifetime. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Clustering algorithms

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