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Energy-efficient power allocation for selfish cooperative communication networks using bargaining game

science China(Information sciences) 2012年第4期55卷 795-804页

作者： DING EnJie 1,ZHANG GuoPeng 1,LIU Peng 1 & YANG Kun 2 1 CUMT-IoT Perception Mine Research Center,China university of Mining and Technology,Xuzhou 221116,China 2 School of computer science and electronic engineering,university of essex wivenhoe park,colchester essex,co4 3sq,uk CUMT-IoT Perception Mine Research Center China University of Mining and Technology

In commercial networks,user nodes operating on batteries are assumed to be selfish to consume their energy solely to maximize their own benefits,e.g.,data *** this paper,we propose a bargaining game to perform the power allocation for the selfish cooperative communication *** our system,two partner nodes can act as a source as well as a relay for each other,and each node is with an energy constraint to transmit one *** a selfish node is willing to seek cooperative transmission only if the data rate achieved through cooperation will not lower than that achieved through noncooperation by using the same amount of *** energy-efficient power allocation problem can be modeled as a cooperative *** proved that there exists a unique Nash bargaining solution (NBS) for the game by verifying that the game is indeed a bargaining ***,the two objectives,i.e.,system efficiency and user fairness specified in the selfish networks can be *** results show that the NBS scheme is efficient in that the performance loss of the NBS scheme to that of the maximal overall rate scheme is small while the maximal-rate scheme is *** simulation results also show that the NBS result is fair in that both nodes could experience better performance than they work independently and the degree of cooperation of a node only depends on how much contribution its partner can make to improve its own performance.

关键词： cooperative communication energy efficiency resource allocation cooperative game theory Nash bargaining solution

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Power allocation scheme for selfish cooperative communications based on game theory and particle swarm optimizer

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science China(Information sciences) 2010年第9期53卷 1908-1912页

作者： ZHANG GuoPeng1*,YANG Kun2 & DING EnJie3 1School of computer science and Technology,China university of Mining and Technology,Xuzhou 221116,China 2School of computer science and electronic engineering,university of essex wivenhoe park,colchester co_4 3sq,uk 3School of Information and Electrical engineering,China university of Mining and Technology,Xuzhou 221116,China School of computer science and Technology China University of Mining and Technology School of computer science and electronic engineering University of Essex Wivenhoe Park School of Information and Electrical engineering China University of Mining an

In commercial networks,autonomous user nodes operating on batteries are assumed to be selfish to consume their energy solely to maximize their own benefits,e.g.,data *** this letter a two-user cooperative game is proposed to perform the power allocation for selfish cooperative communication *** the game,one selfish user node could trade its transmission power for the other ones cooperative relaying directly,and both user nodes are willing to achieve an optimal data-rate increase through cooperative *** find the Nash bargaining solution(NBS) of the game,a low-complexity numerical particle swarm optimizer(PSO) algorithm is also *** results indicate that the NBS of the game is efficient,in that both users could experience better performance than they work independently,and fair,in that the degree of cooperation of a user node only depends on how much contribution its partner can make to improve its own performance.

关键词： cooperative communication power allocation game theory Nash bargaining solution particle swarm optimizer

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Asynchronous cooperative communication systems:A survey on signal designs

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science China(Information sciences) 2011年第8期54卷 1547-1561页

作者： WANG HuiMing 1,2 & XIA XiangGen 3 1 School of electronic and Information engineering, Xi’an Jiaotong university, Xi’an 710049,China 2 State Key Laboratory of Integrated Services Networks, Xidian university,Xi’an 710049, China 3 Department of Electrical and computer engineering,university of Delaware,Newark,DE 19716,USA School of electronic and Information engineering Xi"an Jiaotong University State Key Laboratory of Integrated Services Networks Xidian University Department of Electrical and computer engineering University of Delaware

cooperative communications is a promising technique for future high speed wireless *** systems may be formulated as virtual multi-input multi-output (MIMO) systems where spatial/cooperetive diversity is a key advantage. However,different from MIMO systems,one of the major chal- lenges for cooperative communications systems is that the cooperative transmissions in cooperative systems may be neither time nor frequency synchronized,since the transmissions are from multiple cooperative nodes at different *** existing signal designs for co-located MIMO systems may not be able to collect the cooperative diversity in cooperative communications *** paper gives an overview of recent research efforts on combating the time and frequency asynchronism of the cooperative communication *** focus on the signal designs (or space-time codings/modulations) to achieve full cooperative diversity,and summarize some of the resent distributed space-timing coding and space-frequency coding techniques to combat timing errors and frequency offsets,and in the meantime to achieve full cooperative diversity,in both one-way and two-way cooperative networks.

关键词： cooperative communications time and frequency offsets space-time coding space-frequency codes full cooperative diversity linear receiver

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Study on Modification Mechanism of Rare Earth in ZA27 Cast Alloy with electronic Theory and Molecular Dynamics Method

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Journal of Materials science & Technology 2004年第5期20卷 586-588页

作者： Guili LIU, Rongde LI and Zhenping ZHOUSchool of Materials science and engineering, Shenyang university of Technology, Shenyang 110023, China Sch. of Mat. Sci. and Eng. Shenyang Univ. of Technol. Shenyang 110023 China

A model of liquid ZA27 cast alloy is established according to molecular dynamics theory and an atomic structural model of co-existent a phase and liquid is also presented by means of computer programming. Recursion method is adopted to calculate the electronic structure of RE (rare earth) in grains and around phase boundaries respectively. The calculation shows that RE is more stable around phase boundaries than in grains, which explains the fact that the solution of RE in a phase is less, and RE mainly aggregates in front of phase boundary. The calculations of bonding order integrals also show that RE in front of phases hardly solidify onto the grain surfaces as active element so as to prevent grains growth and refine the grains. As a result, the modification mechanism of RE may be explained from the view of electronic structure.

关键词： Atomic structural model Recursion method electronic structure Modification mechanism Rare easth

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High-speed reconstruction for ultra-low resolution faces

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science China(Information sciences) 2012年第9期55卷 2102-2108页

作者： WANG Li ,CHEN JianSheng,HE JinPing & SU GuangDa Department of electronic engineering,Tsinghua university,Beijing 100084,China Department of electronic engineering Tsinghua University Beijing China

In this paper,a learning-based high-speed reconstruction system for ultra-low resolution faces is implemented using a software/hardware co-design *** hardware component working at 60 MHz contains a field programmable gate array,which is reconfigured to contain parallel processing units,and multiple memories to create parallel *** hardware component effectively handles generating and sorting computationally intensive similarity *** solves the processing speed problem in learning-based super-resolution reconstruction for ultra-low resolution *** system can reconstruct faces using 8 × 6,16 × 12,and 32 × 24 sized images,with 4 × 4,8 × 8,or 16 × 16 times *** experimental results verify the effectiveness of our system in terms of both visual effect and low root mean square *** processing speed can be improved up to a maximum of 7900 times faster than a pure software implementation using C.

关键词： neighborhood image parallel computer template matching pixel compensation pipeline

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高速32位伪随机数发生器电路设计

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计算机工程与应用 2001年第15期37卷 146-148,172页

作者：夏宏曲英杰周志伟华北电力大学计算机系北京102206 北京多思公司北京100083

文章提出了一种实现32位伪随机发生器电路设计方案。该方案的关键是对产生伪随机数所需要的乘法器和模2n－1加法器的设计。针对所采用的伪随机数迭代函数的特殊性，提出了特定的32位×16位乘法器以及模231－1加法器实现方案，使电路的... 详细信息

文章提出了一种实现32位伪随机发生器电路设计方案。该方案的关键是对产生伪随机数所需要的乘法器和模2n－1加法器的设计。针对所采用的伪随机数迭代函数的特殊性，提出了特定的32位×16位乘法器以及模231－1加法器实现方案，使电路的速度得以提高，规模得以减小。整个电路设计采用VHDL语言描述，并通过了逻辑仿真验证。文章同时介绍了一般乘法器以及并行前缀模2n－1加法器的设计原理。

关键词：乘法器并行前缀加法器伪随机数发生器电路设计

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A Video Service Cloud Platform with Multi-Network convergence Application

A Video Service Cloud Platform with Multi-Network Convergenc...

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2012 National conference on Information Technology and computer science

作者： Hong Liu School of computer science,Beijing university of Posts and Telecommunications,Beijing,ChinaMinLu Dai Beijing Peony electronic Group co.,Ltd.,No.2 Huayuan Road,Haidian District,Beijing,China Gang Li Beijing Peony electronic Group co.,Ltd.,No.2 Huayuan Road,Haidian District,Beijing,China FangChun Yang School of computer science,Beijing university of Posts and Telecommunications,Beijing,China

With network technology advances,how to take advantages of different networks to provide users with creative and convergence service experience is of great strategic significance to tri-play service providers.A new video service cloud platform-iVideo platform is proposed in this *** overall framework and functional modules are presented,and the system workflow is also *** iVideo platform provides user with intelligent cross-screen content cloud synchronization service on various devices,such as STB,PC,pad and mobile *** can enjoy user with downloadable high quality videos and also the cross-network convergence service ***,it supports content protection with DRM deployment,which is beneficial to establishing a benign business environment.

关键词： Intelligent video service Cloud platform DRM Multiple network Cross-screen convergence

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Al／Si_3N_4／TbFeco／Si_3N_4磁光盘厚度定量计算方法

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中国激光 1995年第6期22卷 442-448页

作者：眭松山魏军电子科技大学信息材料工程学院

研究用ＸＲＦ基本参数法计算磁光盘的厚度和组成，铝层厚度用ＡＩＫα线计算，两层氨化硅厚度都采用ＳｔＫα线计算确定，磁光记录层采用ＦｅＫα，ＣｏＫα和ＴｂＬα线来确定其厚度及组成。列出了膜厚方程，可由计算机很快解出，其结... 详细信息

研究用ＸＲＦ基本参数法计算磁光盘的厚度和组成，铝层厚度用ＡＩＫα线计算，两层氨化硅厚度都采用ＳｔＫα线计算确定，磁光记录层采用ＦｅＫα，ＣｏＫα和ＴｂＬα线来确定其厚度及组成。列出了膜厚方程，可由计算机很快解出，其结果与标准符合很好。

关键词：磁光盘厚度计算方法

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TBus:一种CASE环境体系结构风格研究与实现

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计算机科学 2004年第1期31卷 154-156,161页

作者：郭兵谢俊赵平原沈艳熊光泽成都国腾通讯(集团)有限公司成都610041 电子科技大学成都610054

CASE(computer,Aided Software engineering计算机辅助软件工程)环境作为一类复杂的系统软件,其体系结构至关重要。本文在工具总线(ToolBus)的基础上,从软件体系结构的角度,提出了一种基于工具总线的CASE环境体系结构风格TBus,对体系结... 详细信息

CASE(computer,Aided Software engineering计算机辅助软件工程)环境作为一类复杂的系统软件,其体系结构至关重要。本文在工具总线(ToolBus)的基础上,从软件体系结构的角度,提出了一种基于工具总线的CASE环境体系结构风格TBus,对体系结构模型、系统行为进行了形式化描述,以及相应的工具结构模型、工具适配器结构模型、工具集成机制等方面进行了深入的研究与分析。建立TBus体系结构风格,时于促进分布式CASE环境和软件平台开发具有重要的指导意义。

关键词： TBus CASE环境结构计算机辅助软件工程体系结构结构风格工具总线

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An Universal Modeling Method for Enhancing the Volumetric Accuracy of CNC Machine Tools

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厦门大学学报（自然科学版） 2002年第S1期41卷 148-149页

作者： FAN Jin-wei, GUAN Jia-liang, WANG Wen-chao, LUO Qi, ZHANG Xiao-long, WANG Ling-yu (Department of Mechanical and Applied electronic engineering, Beijing Polytechnic university, Beijing 100022, China)

Volumetric error modeling method is an important te ch nique for enhancement the accuracy of CNC machine tools by error compensation. I n the research field, the main question is how to find an universal kinematics m odeling method for different kinds of NC machine tools. Multi-body system theor y is always used to solve the dynamics problem of complex physical system. But t ill now, the error factors that always exist in practice system is still not con sidered. In this paper, the accuracy kinematics of MBS (multi-body system) are developed by adding the movement error items and the positioning error items for every couple of adjacent bodies. After make an analysis for different kinds of NC machine tools we can find that NC machine tools can be looked as a kind of sp ecial MBS. It’s main construction only contains two movement branch. the one is from base part to workpiece and the other is from base part to cutter. So an u niversal volumetric error modeling method and the error analysis method for NC m achine tools can be built in this paper based on MBS theory. The essential condi tion for precision machining is derived through mathematics equations and the co ncept of ICCP (inverse changed cutter path ) and ICNI (inverse changed NC instru ction ) are presented in this paper. The numerical solution methods for ICCP and ICNI are also given in this paper which can be directly used to enhance the mac hining accuracy of NC machine tools. In order to verifying the above works, the double frequency laser interface detecting instrument of RENISHAW is used to mea sure the error parameters of the MAKINO 3-axis NC machine tools and the softwar es are developed using C++ developing language to simulate the cutte r trail under different kind conditions in the computer. Latterly the standard w ork parts are selected to be machined on the MAKINO 3-axis NC machine tools bef ore and after use the above mentioned error compensation method respectively. Th e simulation and experime

关键词： error compensation NC machine multi-body syste m

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