MARKOV_CHAIN

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UWB positioning enhancement using Markov chain in indoor NLOS environment被引量：3
《The Journal of China Universities of Posts and Telecommunications》2020年第4期54-58,98,共6页Li Shaoxian Lii Fan Wang Chengrui Hou Yanzhao 
supported by the National Natural Science Foundation of China ( 61701042)。
The accuracy of the positioning system in indoor environment is often affected by none-line-of-sight(NLOS) propagation. In order to improve the positioning accuracy in indoor NLOS environment, a method used ultra-wide...
关键词：wireless location time of arrival(TOA) ultra-wide band(UWB) Markov chain fingerprint matching 
Routing protocol based on social characteristics for opportunistic networks被引量：8
《The Journal of China Universities of Posts and Telecommunications》2014年第1期67-73,103,共8页CHENG Gang SONG Mei ZHANG Yong XING Yi-hai BAO Xu-yan 
supported by the National Natural Science Foundation of China(61171097);the State Major Science and Technology Special Projects(2012ZX03004001)
Opportunistic networks are derived from delay tolerant networks, where mobile nodes have no end-to-end connections. Nodes are represented by people, which means that opportunistic networks can be regarded as social ne...
关键词：opportunistic networks delay tolerant networks social characteristics Markov chain transition probability 
Priority-based IEEE 802.15.4 CSMA/CA mechanism for WSNs被引量：1
《The Journal of China Universities of Posts and Telecommunications》2013年第1期47-53,共7页ZHAO Lu BAI Guang-wei SHEN Hang TANG Zhen-min 
supported by the National Natural Science Foundation of China (60673185, 61073197);the Natural Science Foundation of Jiangsu Province (BK2010548);Scientific & Technological Support Project (Industry) of Jiangsu Province(BE2011186);the State Key Laboratory Program for Novel Software technology (Nanjing University, KFKT2010B08);the Research Innovation Program for College Graduates in Jiangsu Province(CXLX11 0262)
The IEEE 802.15.4 standard is widely used in wireless sensor networks （WSNs）. In this paper, we propose a priority-based IEEE 802.15.4 carrier sense multiple access with collision avoidance （CSMA/CA） mechanism for...
关键词：WSNS 1EEE 802.15.4 MAC Markov chain PRIORITY real-time data 
Anomaly detection of user behavior based on DTMC with states of variable-length sequences被引量：1
《The Journal of China Universities of Posts and Telecommunications》2011年第6期106-115,共10页XIAO Xi XIA Shu-tao TIAN Xin-guang ZHAI Qi-bin 
supported by the National Natural Science Foundation of China (60972011);the Research Fund for the Doctoral Program of Higher Education of China (20100002110033);the Open Research Fund of National Mobile Communications Research Laboratory,Southeast University (2011D11)
In anomaly detection, a challenge is how to model a user＇s dynamic behavior. Many previous works represent the user behavior based on fixed-length models. To overcome their shortcoming, we propose a novel method base...
关键词：intrusion detection anomaly detection shell command discrete-time Markov chain （DTMC） 
Continuous time Markov chain based website navigability measure
《The Journal of China Universities of Posts and Telecommunications》2011年第2期45-52,共8页ZHANG Wei-feng LIU Xia ZHANG Ying-zhou ZHOU Guo-qiang 
supported by the National Natural Science Foundation of China (60873050,60973046,61003040);the Opening Foundation of Jiangsu Key Laboratory of Computer Information Processing Technology in Soochow University (KJS0714);the Opening Foundation of State Key Laboratory of Software Engineering, Wuhan University (BJ211002);The Natural Science Foundation of the Jiangsu Higher Education Institutions of China (09KJB520012)
Website navigability is acquiring a growing importance in website design and redesign,quality evaluation,and improvement.Existing navigability measures mainly depend on site link structure,so that they only consider t...
关键词：navigability MEASURE Markov chain 
Hopping control channel MAC protocol for opportunistic spectrum access networks被引量：2
《The Journal of China Universities of Posts and Telecommunications》2010年第6期65-71,共7页FU Jing-tuan,JI Hong,MAO Xu Key Laboratory of Universal Wireless Communications,Ministry of Education,Beijing University of Posts and Telecommunications,Beijing 100876,China 
supported by the National Natural Science Foundation of China (60832009);the Beijing National Sciences Foundation (4102044);the Fundamental Research Funds for the Central Universities (BUPT2009RC0119);the New Generation of Broadband Wireless Mobile Communication Networks of National Major Projects for Science and Technology Development (2009ZX03003-003-01)
Opportunistic spectrum access （OSA） is considered as a promising approach to mitigate spectrum scarcity by allowing unlicensed users to exploit spectrum opportunities in licensed frequency bands. Derived from the ex...
关键词：channel hopping MAC protocol OSA Markov chain 
Performance analysis of rate-adaptive cooperative MAC based on wireless local area networks
《The Journal of China Universities of Posts and Telecommunications》2009年第5期78-85,共8页ZHANG Yang , XU Hong-kun, CHANG Yong-yu, YANG Da-cheng, WANG Ya-feng School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China 
supported by the Hi-Tech Research and Development Program of China (2007AA01Z211)
Bi-dimensional Markov chain model based on cooperative medium access control （MAC） of wireless local area networks （WLAN） is considered to reflect system performance accurately. Two basic factors that affect the a...
关键词：performance analysis cooperative MAC bi-dimensional Markov Chain non-saturated transmit station retry limit 
Polyclonal clustering algorithm and its convergence被引量：3
《The Journal of China Universities of Posts and Telecommunications》2008年第3期110-117,共8页MA Li JIAO Li-cheng BAI Lin CHEN Chang-guo 
National Natural Science Foundation of China (60372050, 60133010);the Hi-Tech Research and Development Program of China (2002AA135080)
Being characteristic of non-teacher learning, self-organization, memory, and noise resistance, the artificial immune system is a research focus in the field of intelligent information processing. Based on the basic pr...
关键词：clonal selection clustering analysis Markov chain nonconsistence mutation CONVERGENCE 
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