国家自然科学基金(60971082)

作品数：7被引量：20H指数：3
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相关作者：吕子茹郝建军高永康更多>>
相关机构：北京邮电大学更多>>
相关期刊：《现代电信科技》《The Journal of China Universities of Posts and Telecommunications》《中兴通讯技术》《China Communications》更多>>
相关主题：WAVE车载通信ENERGYCOGNITIVE_RADIOCOGNITIVE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 
车载自组网中的网络与信息安全被引量：3
《中兴通讯技术》2011年第3期21-23,43,共4页高永康 郝建军 
国家自然科学基金项目(60971082)
因自组织网络无中心的特点,传统有中心网络中成熟的安全保障机制无法得到直接应用。为了使车载通信技术得到更加广泛的应用,安全问题必须得到很好的解决。文章对车载自组网的安全需求及目标进行分析,然后从安全路由、密钥管理和入侵检测...
关键词：车载自组网 安全路由 密钥管理 入侵检测 
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 
基于WAVE的车载通信系统介绍被引量：7
《现代电信科技》2010年第8期50-54,共5页吕子茹 
国家自然科学基金项目(No.60971082:车辆无线通信网络的跨层设计理论及关键技术研究)
车载通信网络,由于其在智能交通和车载娱乐方面的广泛应用前景,受到了业界的广泛关注。车载通信具有车辆高速行驶、移动区域受限、网络拓扑变化快、通信过程频繁中断、以及要求私密性等特点。而基于WAVE的应用更容易部署,成本更低,更加...
关键词：车载通信 WAVE 802.11p 
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