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国家自然科学基金(60802033): 作品数：10被引量：7H指数：2; 导出分析报告; 相关作者：刘元安张健谢刚毛峻岭刘芳更多>>; 相关机构：北京邮电大学更多>>; 相关期刊：《电子科技大学学报》《The Journal of China Universities of Posts and Telecommunications》《北京邮电大学学报》更多>>; 相关主题：RELAYPARTIALCONSTRAINTRESOURCE_ALLOCATIONOFDMA_SYSTEM更多>>; 相关领域：电子电信自动化与计算机技术理学经济管理更多>>

Efficient wireless multicast retransmission using network coding被引量：2: 《The Journal of China Universities of Posts and Telecommunications》2011年第6期59-67,88,共10页CAO Zhen TANG Bi-hua LIU Yuan-an XIE Gang LIU Fang DENG Pan-liang; supported by the Canada-China Scientific and Technological Cooperation (2010DFA11320);the Fundamental Research Funds for the Central Universities (G470209, 2009RC0308);the National Natural Science Foundation of China (60802033, 60873190);the Important National Science and Technology Specific Projects (2010ZX03007-003-04, 2010ZX03005-001-03); In wireless multicast, network coding has recently attracted attentions as a substantial improvement to packet retransmission schemes. However, the problem of finding the optimal network code which minimizes the retra...; 关键词：reliable multicast network coding （NC） RETRANSMISSION improved Vandermonde matrix

低复杂度的多用户MIMO下行链路块对角化算法被引量：2: 《电子科技大学学报》2011年第5期662-666,共5页张健刘元安谢刚毛峻岭刘芳; 中加国际科学与技术合作项目(2010DFA11320);国家自然科学基金(60802033,60873190);中央高校基本科研业务费专项资金(2009RC0308,G470209);国家科技重大专项(2010ZX03005-001-03,2010ZX03007-003-04); 提出了一种低复杂度的多用户多输入多输出(MIMO)下行链路块对角化预编码算法,证明了该算法能够实现与传统块对角化算法完全相同的系统总容量。算法基于迫零方法进行改造,通过对迫零向量实施格拉姆-施密特正交,可以快速实现等效下行链路...; 关键词：块对角化计算复杂度多输入多输出预编码

Joint relay selection and power allocation algorithm in two-way relay networks with proportional fair constraint: 《The Journal of China Universities of Posts and Telecommunications》2011年第4期45-51,共7页DING Yi LIU Yuan-an XIE Gang DENG Pan-liang LI Xing-zheng; supported by the Sino-Swedish IMT-Advanced Cooperation Project (2008DFA11780);the Canada-China Scientific and Technological Cooperation (2010DFA11320);the National Natural Science Foundation of China (60802033, 60873190);the Hi-Tech Research and Development Program of China (2008AA01Z211);the Fundamental Research Funds for the Central Universities (2009RC0308, G470209);the Important National Science and Technology Specific Projects (2010ZX03007-003-04,2010ZX03005-001-03); In this paper, we consider the joint relay selection and power allocation problem for two-way relay systems with multiple relay nodes. Traditionally, relay selection schemes are primarily focused on selecting one rela...; 关键词：relay selection power allocation two-way relay network amplify-and-forward relay proportional fair scheduling

Distributed interference suppression scheme for multi-cell uplink OFDMA system based on non-cooperative game: 《The Journal of China Universities of Posts and Telecommunications》2011年第2期65-71,共7页CHANG Ling-jun TANG Bi-hua XIE Gang ZENG Ling-kang LIU Kai-ming; supported by the Sino-Swedish IMT-Advanced Cooperation Project (2008DFA11780);the Canada-China Scientific and Technological Cooperation (2010DFA11320);the National Natural Science Foundation of China (60802033, 60873190);the Hi-Tech Research and Development Program of China (2008AA01Z211);the Fundamental Research Funds for the Central Universities (2009RC0308); In this paper,a distributed interference suppression scheme is proposed for multi-cell uplink orthogonal frequency division multiple access（OFDMA） system.Firstly,we model resource allocation process as a non-coopera...; 关键词：MULTI-CELL non-cooperative game OFDMA uplink ICI

Spectral efficient half-duplex relaying with interference suppression: 《The Journal of China Universities of Posts and Telecommunications》2010年第6期19-24,共6页LI Xing-zheng,LIU Yuan-an,XIE Gang,CHANG Ling-jun,HAN Xiao Key Laboratory of Universal Wireless Communications,Ministry of Education,Beijing University of Posts and Telecommunications,Beijing 100876,China; supported by the Sino-Swedish IMT-Advanced Cooperation Project (2008DFA11780);the Canada-China Scientific and Technological Cooperation (2010DFA11320);the National Natural Science Foundation of China (60802033, 60873190);the Hi-Tech Research and Development Program of China (2008AA01Z211); Two-hop relaying systems suffer spectral efficiency loss due to the half-duplex property of relays. This paper proposes an efficient relaying protocol which can recover the spectral efficiency loss but still work with...; 关键词：relaying protocol distributed power control cooperative communication decode-and-forward relay game theory

Optimal power and subcarrier allocation with partial side information for downlink OFDMA system: 《The Journal of China Universities of Posts and Telecommunications》2010年第5期50-57,共8页ZENG Ling-kang LIU Yuan-an XIE Gang CHANG Ling-jun; supported by Sino-Swedish International Mobile Telecommunications-Advanced (IMT-A) Cooperation Project (2008DFA11780);Canada-China Scientific and Technological Cooperation (2010DFA11320);National Natural Science Foundation of China (60802033, 60873190);the Research and Development Program Hi-Tech of China (2008AA01Z211); In this paper,we investigate the power and subcarrier allocation issue in the case of partial side information for downlink orthogonal frequency division multiple access （OFDMA） system.Relaxation method is utilized ...; 关键词：resource allocation partial side information OFDMA surplus function game theory

基于DCT的OFDM-NMSK/NQMSK系统及其性能分析被引量：1: 《北京邮电大学学报》2010年第2期39-43,共5页翁玮文刘元安胡鹤飞袁东明; 国家自然科学基金项目(60802033);中瑞合作IMT-A项目(2008DFA11780);国家高技术研究发展计划项目(2008AA01Z211); 提出了一类基于离散余弦变换(DCT)的正交频分复用(OFDM)-N重最小频移键控(NMSK)/N重正交最小频移键控系统(NQMSK).该类系统将NMSK调制方式与基于DCT的OFDM多载波技术结合在一起,尽管系统频谱利用率有所降低,但却有效改善了系统带外衰减...; 关键词：离散余弦变换正交频分复用 N重最小频移键控载波频率偏移载波间干扰

Improving amplify-and-forward relay selection algorithm based on partial relay link被引量：2: 《The Journal of China Universities of Posts and Telecommunications》2010年第1期56-61,共6页WANG Fei-fei LIU Yuan-an LIN Xiao-feng XIE Gang; supported by Sino-Swedish IMT-Advanced Cooperation Project (2008DFA11780);Canada-China Scientific and Technological Cooperation,the National Natural Science Foundation of China (60802033,60873190);the Hi-Tech Research and Development Program of China (2008AA01Z211); This article addresses the design problem of selecting an appropriate relay in amplify-and-forward （AF） cooperative diversity systems. In this regard, this article focuses on relay selection based on partial channel...; 关键词：cooperative diversity amplify-and-forward relay relay selection average mutual information

Adaptive power loading with BER-constraint for OFDM systems: 《The Journal of China Universities of Posts and Telecommunications》2009年第4期91-97,共7页LIU Kai-ming ZHAO Jing CHEN Chang-xiang LIU Yuan-an; supported by the National Natural Science Foundation of China (60802033, 60873190); A novel adaptive power loading algorithm with the constraint of target overall bit error rate （BER） for orthogonal frequency division multiplexing （OFDM） systems is proposed in this article. The proposed algorithm...; 关键词：OFDM adaptive modulation power loading unequal-BER uniform bit allocation

Pricing in combinatorial double auction-based grid allocation model: 《The Journal of China Universities of Posts and Telecommunications》2009年第3期59-65,共7页LI Li LIU Yuan-an LIU Kai-ming MA Xiao-lei YANG Ming; supported by the Project EC-GIN,European Union(FP6-2006-IST-045256);the National Natural Science Foundation of China(60802033,60873190); This article proposes a novel grid resource allocation model, in which the users and the grid service providers participate in the combinatorial double auction for the resource allocation. To obtain the detailed resou...; 关键词：GRID combinatorial double auction resource allocation PRICING

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