Showing 321 - 340 results of 8,559 for search '"cooperative"', query time: 0.07s Refine Results
  1. 321

    Novel non-cooperative power control game algorithm for cognitive radio by Jun-hui ZHAO, Tao YANG, Xue-xue ZHANG

    Published 2012-11-01
    “…A novel non-cooperative power control algorithm based on new pricing function and the characteristics of cognitive radio technology was proposed with the interference temperature constrain,in order to improve signal to interference plus noise ratio of CR.The problem of power control was changed into the problem of multi-restraints non-linear optimization with interference limits based on channel conditions,maximal network and power limits.The existence and unique of nash equilibrium(NE)in utility function by the principle of game theory and optimization were proved and a distributed algorithm for this game was proposed.Simulation results show that the proposed algorithm can improve users QoS(quality of serves),system performance effectively and improve radio resource efficiency.…”
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    Study of equivalent point-to-point transmission model for coded relay cooperations by Qiu-xia ZHANG, Feng-fan YANG, Shun-wai ZHANG, Lin LUO

    Published 2012-12-01
    “…LDPC-coded relay cooperation and its joint iterative decoding based on the bi-layer Tanner graph were investigated.The coded relay cooperation becomed an equivalent and relatively simple point-to-point transmission model by introducing the notation of average arithmetic/geometr SNR for the receiver in the destination,which could be employed to perform the further study on more complex coded relay cooperations.Both LDPC-coded relay cooperation and its equivalent point-to-point model have almost the same performance by theoretical analysis and ical simulation,which proves the validity of the introduced equivalent model and the joint iterative decoding based on bi-layer Tanner graph.…”
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  4. 324

    Trajectory privacy protection mechanism of obfuscating paths based on vehicles cooperation by Ziwen ZHAO, Ayong YE, Junlin JIN, Lingyu MENG

    Published 2019-08-01
    “…Vehicles sent location information to third parties to obtain location-based services in the Internet of vehicles,which may lead to vehicle trajectory privacy leakage.To address the privacy problem,trajectory privacy protection mechanism of obfuscating paths based on vehicles cooperation was proposed.Firstly,after the vehicle trajectory entropy reaches the custom trajectory protection threshold,the overhead of paths confusion saves by reducing the number of vehicle paths confusion.Then,paths confusion algorithm was designed to increase chances of vehicle paths confusion at intersections,which can improve the degree of vehicle trajectory protection.Finally,the simulation experiment verified the validity and efficiency of the method from the trajectory entropy and trajectory tracking success rate.…”
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  5. 325

    Distributed Cooperative Search Control Method of Multiple UAVs for Moving Target by Chang-jian Ru, Xiao-ming Qi, Xu-ning Guan

    Published 2015-01-01
    “…A performance index function combining with target cost, environment cost, and cooperative cost is constructed, and the cooperative searching problem can be transformed into a central optimization problem. …”
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    Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks by Andreas Merentitis, Dionysia Triantafyllopoulou

    Published 2010-01-01
    “…An algorithm for cooperative Dynamic Spectrum Access in Cognitive Radio networks is presented. …”
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    Cooperative ARQ protocol based on switch and stay node selection in WSN by HU Ying-bo1, CAI Yue-ming1

    Published 2010-01-01
    “…A cooperative automatic repeat request(ARQ) protocol based on switch and stay node selection(SSNS-CARQ) was proposed,which could obtain high energy efficiency and reliable transmission at the same time.A Markov model for analyzing the system throughput was built,and system throughput performance of the proposed protocol and the traditional ARQ protocol were analyzed based on such model.Based on a widely used energy consumption model in WSN,the energy consumption performance of SSNS-CARQ protocol and the traditional ARQ protocol were discussed and compared in terms of energy efficiency,and the effects that positions of relay nodes imposed on energy efficiency were also disscussed.Numerical and simulation results validated the Markov model effective for analyzing the system throughput.It is shown that SSNS-CARQ protocol could perform better in terms of throughput and energy efficiency when compared with the traditional ARQ protocol through simulations.…”
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  16. 336

    Via Crucis of International Cooperation: Terminal Crisis or Resurrection?Introduction to the Dossier by Daniele Benzi

    Published 2013-09-01
    “…Via Crucis of International Cooperation: Terminal Crisis or Resurrection?Introduction to the Dossier…”
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  17. 337

    STIMULATION OF COOPERATION OF SMALL, MEDIUM AND LARGE INNOVATIVE BUSINESS IN FOREIGN COUNTRIES by A. Kirillov

    Published 2016-01-01
    “…The role of the state support in questions of cooperation of small and large business in the innovative system is estimated.…”
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