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Joint subcarrier and power allocation in uplink OFDMA systems based on stochastic game

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Science china(Information Sciences) 2010年第12期53卷 2557-2566页

作者： WU Dan 1,CAI YueMing 1,2 & SHENG YanMing 1 1 Institute of communications Engineering,PLA university of Science and Technology,nanjing 210007,china 2 national mobile communications research laboratory,southeast university,nanjing 210096,china Institute of communications Engineering PLA University of Science and Technology Nanjing China national mobile communications research laboratory Southeast University Nanjing China

In uplink orthogonal frequency division multiplexing access(OFDMA) systems,efficient resource allocation can greatly improve system ***,in this paper,we present a game-theoretical approach to achieve a joint subcarrier and power allocation in a distributed ***,the subcarrier allocation problem is modeled as a multi-player discrete,stochastic and finite strategy game,where each of the subcarriers is viewed as a player to choose the most satisfying *** subcarriers of each user are allocated with equal *** the proposed game model,on the one hand,we exploit the support and programming methods to obtain the Nash equilibriums,and analyze their theoretical *** the other hand,we propose a lowcomplexity algorithm based on the linear reward-inaction(L R-I) algorithm to search for the Nash *** the relationship between the convergence results of this algorithm and the Nash equilibriums is *** simulation results demonstrate the effectiveness of the resource allocation game model and algorithm.

关键词： stochastic game OFDMA subcarrier allocation power allocation learning automata linear reward-inaction

Negacyclic codes over Galois rings of characteristic 2a

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Science china Mathematics 2012年第4期55卷 869-879页

作者： ZHU ShiXin 1,2,& KAI XiaoShan 1,2 1 School of Mathematics,Hefei university of Technology,Hefei 230009,china 2 national mobile communications research laboratory,southeast university,nanjing 210096,china School of Mathematics Hefei University of Technology Hefei China national mobile communications research laboratory Southeast University Nanjing China

Abstract We investigate negacyclic codes over the Galois ring GR（2a,m） of length N = 2kn, where n is odd and k≥0. We first determine the structure of u-constacyclic codes of length n over the finite chain ring GR（2a, m）[u]/〈u2k ＋ 1〉. Then using a ring isomorphism we obtain the structure of negacyclic codes over GR（2a, m） of length N = 2kn （n odd） and explore the existence of self-dual negacyclic codes over GR（2a, m）. A bound for the homogeneous distance of such negacvclic codes is also given.

关键词： negacyclic codes constacyclic codes Galois rings self-dual codes homogeneous distance

A sub-block orthogonal single carrier frequency domain equalization system in fast Rayleigh fading channel

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Science china(Information Sciences) 2010年第9期53卷 1833-1847页

作者： LIU Rui*,GAO XiQi* & WANG WenJin national Communication research laboratory,southeast university,nanjing 210096,china national Communication research laboratory Southeast University Nanjing China

In this paper,we analyze the frequency domain linear equalization(FDLE) of single carrier block transmission(SCBT) systems under fast fading ***,we propose a new approximating model in which the channel is assumed to be static in sub-blocks vary each *** on this model,we derive a new 2-orthogonal-sub-blocked frequency domain equalization ***,we derive the conditions of the channel under which the equalization method can be applied to the 2-orthogonal-sub-blocked *** demonstrates that the proposed method can improve the anti-Doppler ability of SC-FDLE and at the same time keep its high efficiency and low complexity.

关键词： SCBT SC-FDE LMMSE

The renascence of industrial historic buildings——Taking the protective remolding and reusing of Chenguang Mechanical Factory in nanjing as an example

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Science china(Technological Sciences) 2009年第9期52卷 2502-2509页

作者： WANG YanHui research Institute of Architecture,southeast university,nanjing 210096,china research Institute of Architecture Southeast University Nanjing China

The protective remolding and reusing of industrial historic buildings and sites is regarded as a great scientific matter in today's urban development. Based on discussing its significance and value,this paper,taking a specific example,makes a systematic discussion on the design strategy and method from the aspects of overall planning,remolding the old buildings,designing the new buildings,etc.

关键词： industrial historic buildings and sites protective remolding and reusing renascence strategy

中国政治经济学年度发展报告（2023）（下）

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政治经济学评论 2024年第3期 90+207-208页

作者： Center for Studies of Contemporary Political Economy,research Institute for 21st-Century Marxism,Nankai university·university of Chinese Academy of Social Science Center for Teaching and research on Capital,Renmin university of china national Institute of Socialist Political Economy with Chinese Characteristics,Renmin university of china 南开大学·中国社会科学院大学21世纪马克思主义研究院当代政治经济学研究中心中国人民大学《资本论》教学与研究中心中国人民大学全国中国特色社会主义政治经济学研究中心

编者按2023年，高质量发展扎实推进，新质生产力加快形成，我国经济总体回升向好，圆满实现发展主要预期目标。为针对性地破解经济恢复发展中的难题，聚焦推进中国式现代化进程中的重点、难点问题，中国政治经济学界开展系统深入研究，...

编者按2023年，高质量发展扎实推进，新质生产力加快形成，我国经济总体回升向好，圆满实现发展主要预期目标。为针对性地破解经济恢复发展中的难题，聚焦推进中国式现代化进程中的重点、难点问题，中国政治经济学界开展系统深入研究，取得系列代表性成果。为准确刻画学界研究进展和轨迹，推动中国经济学理论体系的构建和完善，本刊精选议题如期奉上《中国政治经济学年度发展报告（2023）》。自2010年起，本刊连续十四年发布《中国政治经济学年度发展报告》，“年度发展报告”专栏已成为本刊标志性特色栏目。2023年报告聚焦12个专题，分为（上）（下）两篇，其中专题1—6于报告（上）篇刊登，专题7—12由报告（下）篇刊登。2023年报告（下）选题如下：

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Performance analysis of uplink MIMO MC-CDMA systems based on linear zero-forcing V-BLAST algorithm

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Science in china(Series F) 2008年第9期51卷 1305-1318页

作者： YANG Wei1,2 & YANG Wei1 1 State Key laboratory of Rail Traffic Control and Safety,Beijing Jiaotong university,Beijing 100044,china 2 national mobile communications research laboratory,southeast university,nanjing 210096,china State Key laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing China national mobile communications research laboratory Southeast University Nanjing China

A structure was proposed for multiple-input-multiple-output multicarrier code divi- sion multiple access （MIMO MC-CDMA） uplink transmission system. Linear zero- forcing V-BLAST （ZF V-BLAST） algorithm and maximum ratio combining （MRC） scheme was applied to the receivers. The average bit error rate （BER） expression was derived on condition that the number of receive antennas was larger than that of transmit antennas and it was verified by simulations. Numerical results show that the number of transmit and receive antennas, as well as the number of sub- carriers, all exert significant effects on the BER performance. The space diversity and frequency diversity show different abilities to improve the BER performance. The MIMO MC-CDMA system based on linear ZF V-BLAST algorithm is capable of achieving better BER performance than that of the conventional MC-CDMA system by reducing the number of transmit antennas or increasing the number of receive antennas.

关键词： bit error rate(BER) multiple-input-multiple-output(MIMO) multicarrier code division multiple access(MC-CDMA) zero-forcing(ZF)

Analyzing architecture articles

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中国科学：技术科学英文版 2010年第7期53卷 1739-1742页

作者： QI Kang research Institute of Architecture, southeast university, nanjing 210096, china research Institute of Architecture Southeast University Nanjing China

In the present study, we express the quality, function, and characteristics of architecture to help people comprehensively understand what architecture is. We also reveal the problems and conflict found in population, land, water resources, pollution, energy, and the organization systems in construction. china’s economy is transforming. We should focus on the cities, architectural environment, energy conservation, emission-reduction, and low-carbon output that will result in successful green development. We should macroscopically and microscopically analyze the development, from the natural environment to the artificial environment; from the relationship between human beings and nature to the combination of social ecology in cities, and farmlands. We must learn to develop and control them harmoniously and scientifically to provide a foundation for the methods used in architecture research.

关键词： architecture science sustainable development

Time · Space · Architecture

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Science china(Technological Sciences) 2009年第9期52卷 2481-2485页

作者： QI Kang research Institute of Architecture, southeast university, nanjing 210096, china research Institute of Architecture Southeast University Nanjing China

In the 20th century a Swiss writer wrote a book titled Time, Space and Architecture, in which he discussed the relationship between architecture and the times. Fifty years after that, this paper adopts the same title, hoping to deepen the understanding of the space-time structure in architecture and contribute to the new exploration of architectural forms.

关键词： Space Time Architecture

A　Homotopy-Controlled　Mean　Field　Annealing　Partially-Connected　Neural　Equalizer　for　Pan-European　GSM　System

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通信学报 1997年第3期 36-44页

作者： Xue Jianjun You Xiaohu (national communications research laboratory southeast university, nanjing 210018)

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关键词： neural equalizer GSM system