国家自然科学基金(60832007)

作品数:17被引量:34H指数:3
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相关作者:任品毅刘婧张超薛少丽战明浩更多>>
相关机构:西安交通大学武汉军械士官学校电子科技大学宜宾学院更多>>
相关期刊:《工程数学学报》《电子科技大学学报》《Chinese Journal of Electronics》《西安交通大学学报》更多>>
相关主题:COOPERATIONREMOTEMACWIENEROFDM更多>>
相关领域:电子电信自动化与计算机技术更多>>
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频偏对分布式MIMO-OFDM系统性能影响分析
《制造业自动化》2012年第14期98-100,共3页邓凯 
国家自然科学基金(60832007);宜宾学院博士科研启动金项目(2011B09)
本文从理论上分析了频偏对采用迫零检测的分布式多入多出(MIMO)正交频分复用(OFDM)系统性能的影响。推导了由频偏导致的载波间干扰(ICI)功率,进而得到系统信干噪比(SINR)的表达式。通过分析迫零检测的特性,指出传统SINR计算方法不准确...
关键词:MIMO OFDM 分布式天线 频偏 载波间干扰 
A directional MAC protocol with long-range communication ability in ad hoc networks
《Science China(Information Sciences)》2012年第4期765-777,共13页REN PinYi FENG Jia WANG YiChen 
supported by National Natural Science Foundation of China(Grant No.60832007);National High-Tech Research & Development Program of China(Grant No.2009AA011801);National Key Laboratory Foundation of China(Grant No.9140C5303030803)
To address the problem that long-range communication capability in ad hoc networks using directional antenna is not generally utilized, a directional media access control (DMAC) protocol with long-range communicati...
关键词:ad hoc networks directional antenna MAC 
认知无线网络中基于主用户行为的联合路由和信道分配算法被引量:10
《通信学报》2011年第11期183-190,共8页刘婧 任品毅 薛少丽 张超 
国家自然科学基金重点资助项目(60832007);国家自然科学基金资助项目(61102082);国家高技术研究发展计划("863"计划)基金资助项目(2009AA011801);国家科技重大专项基金资助项目(2010ZX03005-003);东南大学移动通信国家重点实验室开放研究基金资助课题(2011D14)~~
针对认知无线网络中主用户行为将导致频谱瞬时变化而影响路由稳定性的问题,提出了一种基于主用户行为的路由和信道联合分配算法。该算法通过采用呼叫模型对主用户行为建模,并根据动态源路由协议的路由寻找机制,在目的节点等待多个路由...
关键词:认知无线网络 主用户行为 路由 信道分配 
Ad Hoc网络中具有远距离通信能力的方向性MAC协议被引量:3
《中国科学:信息科学》2011年第10期1238-1250,共13页任品毅 冯佳 王熠晨 
国家自然科学基金项目(批准号:60832007);国家高技术研究发展计划(批准号:2009AA011801);国家级重点实验室基金项目(批准号:9140C5303030803);国家重大科技专项(批准号:2010ZX03005-003;2009ZX03003-008-002)资助项目
针对在使用方向性天线的AdHoc网络中没有合理利用远距离传输优势的问题,提出了一种支持远距离通信的方向性MAC协议.在该方向性MAC协议中,中间节点会利用一种远距离定向算法帮助发送节点获取位于两跳远的目的节点的定向信息从而建立远距...
关键词:AD HOC 网络 方向性天线 MAC 
分布式发射天线下BPSKAlamouti方案性能分析(英文)
《电子科技大学学报》2011年第5期667-670,675,共5页李志刚 唐友喜 
supported by the National 863 High Technology Development Project (2009AA01Z236);National Natural Science Foundation of China (60902027, 60832007 and 60901018);the Funds (9140A21030209DZ02);the Fundamental Research Funds for the Central Universities (ZYGX2009J008 and ZYGX2009J010)~~
在分布式发射天线系统中,针对圆形小区下基于Alamouti空时分组编码和采用BPSK调制的情况,推导了误比特性能的近似解析表达式。理论推导过程考虑了路径损耗、阴影衰落、单径瑞利衰落和背景噪声的影响。在2发1收、单径瑞利衰落信道、200 ...
关键词:比特误码率 分布式天线系统 大尺度衰落 空时分组码 
Timing Acquisition for Distributed Antenna Systems with the Cooperation of Two Remote Antennas被引量:2
《Chinese Journal of Electronics》2011年第3期527-532,共6页QING Chaojin SHAO Shihai TANG Youxi 
This work is supported in part by the National Natural Science Foundation (No.60832007, No.60901018, No.60902027, No.U1035002/L05), 863 Hi-Tech Research and Development Project of China (No.2009AA01Z236), Key Project (No.2009ZX03003-008-01), and the Fundamental Research Funds for the Central Universities of China (No.ZYGX2009J008, No.ZYGX2009J010).
In the coverage region of Distributed antenna systems (DAS), two Remote antennas (RA) are as- sumed at the Base station (BS) for receiving the signal transmitted from the Mobile station (MS) with a single ante...
关键词:Cooperative timing acquisition Distributed antenna systems Maximum likelihood estimator Probability of correct acquisition. 
Timing Acquisition for Distributed Antenna Systems by Exploiting the Advantages of Cooperation over Flat-Fading Channels被引量:2
《Chinese Journal of Electronics》2011年第2期337-342,共6页QING Chaojin SHAO Shihai TANG Youxi 
This work is supported in part by the National Natural Science Foundation of China (No.60832007, No.60901018, No.609002027, No.60602009), "863" Project (No.2009AA01Z236) and Key Project of China (No.2009ZX03003-008-01, No.2008BAH30B11).
In the fiat Rayleigh channels, two remote antennas are assumed at the base station for receiving the signal transmitted from the mobile station with a single antenna. By utilizing the coverage range of each remote ant...
关键词:Cooperative timing acquisition Distributed antenna systems Maximum likelihood estimator Remote antenna. 
Low complexity construction for quasi-cyclic low-density parity-check codes by Progressive-Block Growth被引量:6
《Science China(Information Sciences)》2011年第2期371-380,共10页REN PinYi YUAN Qiang WANG Rui CAI Jun 
supported by the National Natural Science Foundation of China (Grant No. 60832007);National Hi-Tech Research and Development Program of China (Grant No. 2006AA01Z262)
In this paper, a novel method for constructing quasi-cyclic LDPC codes with low complexity is proposed. By choosing each circulant permutation matrix sequentially, the proposed method ensures that the current circulan...
关键词:quasi-cyclic (QC) LDPC (low-density parity-check) codes circulant permutation matrix GIRTH 
Rectangle blocking matrices based unitary multistage Wiener reduced-rank joint detection algorithm for multiple input multiple output systems被引量:3
《Science China(Information Sciences)》2010年第10期2116-2126,共11页REN PinYi WANG Rui ZHANG ShiJiao 
supported by the Key Laboratory of Universal Wireless Communication in Beijing University of Posts and Telecommunications, Ministry of Education (Grant No. 2007101);the National High-Tech Research & Development Program of China (Grant No. 2009AA011801);the National Natural Science Foundation of China (Grant No. 60832007)
Traditional equalization algorithms for multiple input multiple output (MIMO) systems suffer from high complexity and low convergence rate. So an improved adaptive reduced-rank joint detection algorithm of multistag...
关键词:multiple input multiple output (MIMO) systems unitary multistage Wiener filter (UMSWF) joint detection blocking matrix 
A CHANNEL ASSIGNMENT ALGORITHM VIA CONFLICT SHIFTING FOR DISTRIBUTED COGNITIVE NETWORKS
《Journal of Electronics(China)》2010年第5期647-654,共8页Gong Minkang Ren Pinyi 
Supported by the National Natural Science Foundation of China (No. 60832007);the National Hi-Tech Research and Development Plan of China (No. 2009AA011801)
Channel assignment is a challenge for distributed cognitive networks due to spectrum mobility and lack of centralized entity.We present a dynamic and efficient algorithm via conflict shifting,referred as Shifting-base...
关键词:Distributed cognitive network channel assignment Shifting-based Channel Assignment (SCA) 
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