Showing 1,341 - 1,360 results of 19,511 for search '"Algorithms"', query time: 0.09s Refine Results
  1. 1341
  2. 1342

    Adaptive Array Beamforming Using a Chaotic Beamforming Algorithm by Ana Jovanović, Luka Lazović, Vesna Rubežić

    Published 2016-01-01
    “…The Chaotic beamforming adaptive algorithm is new adaptive method for antenna array’s radiation pattern synthesis. …”
    Get full text
    Article
  3. 1343

    Multi-objective task offloading algorithm for mobile cloud computing by Fuhong SONG, Huanlai XING, Wei PAN

    Published 2019-09-01
    Subjects: “…multi-objective evolutionary algorithm…”
    Get full text
    Article
  4. 1344
  5. 1345

    An Improved PSO Algorithm for Distributed Localization in Wireless Sensor Networks by Dan Li, Xian bin Wen

    Published 2015-07-01
    “…Simulation results indicate that the proposed distributed localization algorithm is superior to the previous algorithms.…”
    Get full text
    Article
  6. 1346
  7. 1347
  8. 1348

    PRESEE: An MDL/MML Algorithm to Time-Series Stream Segmenting by Kaikuo Xu, Yexi Jiang, Mingjie Tang, Changan Yuan, Changjie Tang

    Published 2013-01-01
    “…Moreover, the performance of these algorithms depends heavily on parameters, which are hard for the users to set. …”
    Get full text
    Article
  9. 1349

    SL-n iterative localization algorithm in wireless sensor networks by LUO Xu, CHAI Li, YANG Jun

    Published 2011-01-01
    “…To compensate for the lackness of robustness caused by MMSE(minimum mean square estimation) in overall situation in wireless sensor network iterative multilateration algorithm,a new estimation algorithm called SL-n were proposed.Firstly all samples were obtained using trilateration or partial MMSE from every combination of n reference nodes which belonged to some blind node,then the location of the blind node were estimated.Simulation experiments show that the proposed SL-n algorithm outperforms MMSE method in overall situation and can reduce the position error sufficiently when the reference error is large.…”
    Get full text
    Article
  10. 1350

    MIMO-Based Forward-Looking SAR Imaging Algorithm and Simulation by Ziqiang Meng, Yachao Li, Shengqi Zhu, Yinghui Quan, Mengdao Xing, Zheng Bao

    Published 2014-01-01
    “…Finally, some simulations of point targets and comparison results confirm the efficiency of our proposed algorithm.…”
    Get full text
    Article
  11. 1351

    Asymptotic RZF cooperative beamforming algorithm based on energy efficiency by Yinghui ZHANG, Biao ZHANG, Xiaoting LU, Yang LIU

    Published 2019-10-01
    “…A low complexity asymptotic regularized zero forcing cooperative beamforming algorithm based on energy efficiency in heterogeneous massive MIMO system was proposed,aiming at the problem that the current multi-flow regularization zero forcing beamforming algorithm sets the power constraint of each antenna in the regularization term as a fixed value and ignores the influences of factors such as the number of antennas,the number of users and QoS.The algorithm selects the optimal antenna power constraint set through the optimization method,and the optimal beamforming was asymptotically ob-tained to balance the interference among users to achieve the optimal energy efficiency,considering the impact of the number of antennas and users with the constraints of the antenna power and QoS.In view of the importance of backhaul in massive MIMO system,a backhaul power consumption model and the impact of backhaul power consumption on system performance was analyzed.Analysis and simulation results show that the proposed algorithm has great improvement of the performance,especially when the number of antennas is large.The algorithm is close to optimal performance,especially suitable for massive MIMO system of next generation communication.…”
    Get full text
    Article
  12. 1352

    Energy-efficient object tracking algorithm in wireless sensor networks by REN Qian-qian1, LI Jian-zhong1, LI Jin-bao2, ZHU Jing-hua1

    Published 2009-01-01
    “…An energy efficient tracking algorithm(EETA) was proposed,which reduced energy consumption in sensor network by introducing an event-driven sleep scheduling mechanism.EETA gave tradeoffs between real time and energy efficiency by letting a maximum number of sensor nodes outside tracing area stay asleep,and reduced the computation complexity to O(N) by formulating the location predication of an object as a state estimation problem of sensor node,in-stead of building a complex model of its trajectory.Meanwhile,EETA located the object by using adaptive weighted cen-troid algorithm with complexity of O(N).The method was evaluated with a network of 64 sensor nodes,as well as an analytical probabilistic model.The results demonstrate the effectiveness of the method.…”
    Get full text
    Article
  13. 1353

    A regional augmented PPP algorithm for offshore considering NWP by Ying Xu, Xiangdan Meng, Jianhui Cui, Lin Ma

    Published 2025-01-01
    “…Meanwhile, almost all stations can achieve a faster solution convergence by this algorithm. Furthermore, the algorithm is suitable not only for areas that lack reference stations at sea but also for the lack of reference stations on land.…”
    Get full text
    Article
  14. 1354

    Network selection algorithm based on synergetic for heterogeneous wireless network by Ran LUO, Su ZHAO, Qi ZHU

    Published 2017-04-01
    “…A network selection algorithm based on synergetic for heterogeneous wireless network was proposed. …”
    Get full text
    Article
  15. 1355
  16. 1356

    Efficient i-DFA construction algorithm based on state grouping by Deng-ke QIAO, Qing WANG, Ting-wen LIU, Yong SUN, Li GUO

    Published 2013-08-01
    “…Regular expression matching plays an important role in many network and security applications.DFA is the preferred representation to perform regular expression matching in high-speed network,because of its high and stable matching efficiency.However,DFA may experience state explosion,and thus consume huge memory space.As a classical solution for the problem of state explosion,i-DFA can reduce the memory consumption significantly and guarantee the worst matching performance at the same time.However,prior methods are inefficient in both time and space during the construction of i-DFA.An efficient i-DFA construction algorithm based on the idea of state grouping was proposed.Furthermore,a formal description for the problem of state grouping was given,and it was proved that it was NP-hard to get the best state grouping result.Thus,based on local search strategy,a near-optimal algorithm was introduced to divide states into different groups.Compared with the classical construction method,the significant improvement in both time and space is achieved; the i-DFA of the proposed method may have 2/3 states as that of prior method and the proposed i-DFA is constructed with only 1/16 time of it.…”
    Get full text
    Article
  17. 1357

    Self-learning differential evolution algorithm for dynamic polycentric problems by Xing-bao LIU, Jian-ping YIN, Chun-hua HU, Rong-yuan CHEN

    Published 2015-07-01
    “…A novel self-learning differential evolution algorithm is proposed to solve dynamical multi-center optimization problems.The approach of re-evaluating some specific individuals is used to monitor environmental changes.The proposed self-learning operator guides the evolutionary group to a new environment,meanwhile maintains the stable topology structure of group to maintain the current evolutionary trend.A neighborhood search mechanism and a random immigrant mechanism are adapted to make a tradeoff between algorithmic convergence and population diversity.The experiment studies on a periodic dynamic function set suits are done,and the comparisons with peer algorithms show that the self-learning differential algorithm outperforms other algorithms in term of convergence and adaptability under dynamical environment.…”
    Get full text
    Article
  18. 1358

    Risk Assessment of Government Debt Based on Machine Learning Algorithm by Dan Chen

    Published 2021-01-01
    “…This paper builds an effective government debt risk assessment system based on machine learning algorithm. According to forming the performance of local government debt risk and its internal and external influencing factors, this study applies the analytic hierarchy process, entropy method, and BP neural network method to construct the local government risk assessment index system, which includes the primary and secondary indexes including the explicit debt risk, the contingent implicit debt risk, and the financial and economic operation risk. …”
    Get full text
    Article
  19. 1359
  20. 1360