国家自然科学基金(60872049)

作品数:13被引量:29H指数:3
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相关作者:乐光新罗涛郝建军林霏路安琼更多>>
相关机构:北京邮电大学山东轻工业学院更多>>
相关期刊:《The Journal of China Universities of Posts and Telecommunications》《通信学报》《中国科学:信息科学》《China Communications》更多>>
相关主题:协同通信感知技术多用户无线移动通信系统无线电技术更多>>
相关领域:电子电信自动化与计算机技术交通运输工程机械工程更多>>
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Energy efficiency of virtual MIMO transmission schemes for cluster-based wireless sensor networks被引量:2
《The Journal of China Universities of Posts and Telecommunications》2011年第4期31-38,共8页DING Jie LIU Dan-pu WU Hua-ri 
supported by the National Natural Science Foundation of China (60871042, 60872049, 60971082, and 60972073);National Great Science Specific Project (2009ZX03003-001,2009ZX03003-011)
In this paper, a cluster-based virtual multiple-input multiple-output (MIMO) transmission architecture is proposed for energy-constrained wireless sensor networks. In the proposed architecture, instead of using clus...
关键词:energy efficiency MIMO STBC V-BLAST wireless sensor networks 
Asymptotic analysis for transmission capacity of wireless Ad-hoc networks被引量:3
《The Journal of China Universities of Posts and Telecommunications》2011年第3期22-26,共5页CHEN Chang-hai YIN Chang-chuan YUE Guang-xin 
supported by the National Natural Science Foundation of China (60972073,60872049,60871042,and 60971082);the National Basic Research Program of China (2009CB320407);the National Great Science Specific Project (2010ZX03001-003)
This article puts forward a new solution to the bound of the outage probability and transmission capacity of Ad-hoc networks. For the proofs of the upper and lower bounds are too complex, a much easier way is introduc...
关键词:AD-HOC transmission capacity lower and upper bounds asymptotic bound 
Dynamic subcarrier and power allocation based on cooperative game theory in symmetric cooperative OFDMA networks
《The Journal of China Universities of Posts and Telecommunications》2011年第2期9-16,共8页LIU Wei LUO Tao YUE Guang-xin 
supported by the National Natural Science Foundation of China (60872049, 60971082, 60871042, 60972073);the National Basic Research Program of China (2009CB320407);National Great Science Specific Project (2009ZX03003-001, 2009ZX03003-011, 2010ZX03001-003);Chinese Universities Scientific Fund
In order to improve the efficiency and fairness of radio resource utilization,a scheme of dynamic cooperative subcarrier and power allocation based on Nash bargaining solution(NBS-DCSPA) is proposed in the uplink of...
关键词:cooperative relay OFDMA radio resource allocation NBS FAIRNESS 
Determination of Threshold for Energy Detection in Cognitive Radio Sensor Networks被引量:4
《China Communications》2011年第1期14-19,共6页郝建军 黎晋 
supported in part by the National Natural Science Foundation of China(Grant Nos.60971082,60872049,60972073and60871042);the National Key Basic Research Program of China(Grant No.2009CB320400);the National Great Science Specific Project(Grant Nos.2009ZX03003-001,2009ZX03003-011and2010ZX03001003);Chinese Universities Scientific Fund,China
The Internet of Things (loT) is called the world' s third wave of the information industry. As the core technology of IoT, Cognitive Radio Sensor Networks (CRSN) technology can improve spectrum utilization effici...
关键词:Internet of Sensor Networks energy Things Cognitive Radio detection THRESHOLD 
A Position-Based Handoff Scheme in WAVE Systems被引量:1
《China Communications》2011年第1期95-101,共7页罗涛 吕子茹 姚哲 向卫东 
supported in part by National Natural Science Foundation of China(Grant Nos.60971082,60872049,60972073,and60871042);National Key Basic Research Program of China(Grant No.2009CB320407);National Great Science Specific Project(Grant No.2009ZX03003-001,2009ZX03003-011,2010ZX03001003);Chinese Universities Scientific Fund,China
IEEE 802.11p has been proposed to extend the application of IEEE 802.11 to Wireless Access fast fading Vehicular Environments (WAVE).Due to the high velocities of vehicles and thus the inconstant topology of networks,...
关键词:HANDOFF Internet of Vehicles WAVE 
Generalized analysis model for fractional frequency reuse
《The Journal of China Universities of Posts and Telecommunications》2010年第5期1-5,共5页XI Wei YIN Chang-chuan YUE Guang-xin SUN Hong-mei 
supported by the National Natural Science Foundation of China (60872049, 60871042);the Hi-Tech Research and Development Program of China (2007AA10Z235);the Teaching and Research Finances for the Returned Overseas Chinese Scholars
Fractional frequency reuse (FFR) is an effective technique to mitigate co-channel interference in orthogonal frequency division multiple access (OFDMA)-based broadband cellular systems.In this paper,we present a g...
关键词:co-channel interference FFR power ratio 
Partial channel information feedback mechanism for FFR-based multi-channel systems
《The Journal of China Universities of Posts and Telecommunications》2010年第1期19-24,43,共7页XI Wei YIN Chang-chuan YUE Guang-xin SUN Hong-mei 
supported by the National Natural Science Foundation of China (60872049,60871042);the Hi-Tech Research and Development Program of China (2007AA10Z235);Research Finances for the Returned Overseas Chinese Scholars
This article puts forward a partial channel state information (CSI) feedback scheme for fractional frequency reuse (FFR)-based orthogonal frequency division multiple access (OFDMA) systems. Efficient CSI feedbac...
关键词:CSI FEEDBACK FFR multiuser diversity OFDMA opportunistic scheduling 
感知无线电网络中的联合波束成形与调度算法
《中国科学(F辑:信息科学)》2009年第12期1314-1320,共7页郤伟 尹长川 乐光新 
国家自然科学基金(批准号:60872049;60871042);国家重点基础研究发展计划(批准号:2007AA10Z235);教育部留学归国人员教学;科研建设项目资助
感知无线电作为提高频谱使用效率的有效手段而得到研究人员的广泛关注,成为当前无线通信领域研究的热点.基于子空间理论,文中针对感知网络提出了一种能够最大程度地保持用户间正交性、抑制用户间干扰的低复杂度调度算法.在该调度算法的...
关键词:感知无线电 多入多出 波束成形 多用户分集 功率分配 注水原理 
协同通信系统中功率分配方案的分类研究
《山东轻工业学院学报(自然科学版)》2009年第2期21-25,共5页刘爱华 林霏 张少蔚 
国家自然科学基金资助项目(60872049)
协同通信系统中的功率分配方案是指在系统总发送功率一定的前提下,如何在参与协同通信的终端之间合理分配功率,以此优化系统性能。本文针对协同通信系统中的现有功率分配方案,给出较为详细的总结与分类,设定目标函数、信道状态信息、有...
关键词:协同通信 放大转发 功率分配 中继 
协同通信系统中基于遍历容量的近似最优功率分配被引量:11
《通信学报》2009年第6期26-32,共7页林霏 罗涛 路安琼 乐光新 
国家自然科学基金资助项目(60872049,60871042);国家高技术研究发展(“863”计划)基金资助项目(2007AA10Z235);教育部留学归国人员教学、科研建设基金资助项目~~
传统半双工放大转发(AF)协同通信无论信道状态如何,总是采用协同通信模式,在一定程度上降低了系统自由度的利用率。基于此研究了"何时协同"与最优发送功率分配的问题。首先给出了AF系统的遍历容量表达式及其上界;然后以遍历容量上界为...
关键词:协同通信 功率分配 遍历容量 误码率 随机方向模型 
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