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| Interference-avoidance Dynamic Channel Allocation for Multimedia Broadcast Multicast Service Single Frequency Networks |
| Zhang Hai-bo①② Liu Ying-na① Li Fang-wei① Liu Kai-jian① |
①(Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China)
②(Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC USA, 27695) |
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Abstract A dynamic channel allocation algorithm is proposed to avoid all interference and improve spectrum efficiency in Multimedia Broadcast multicast service Single Frequency Networks (MBSFN). Four electromagnetic compatibility constraint functions are redefined according to the topology information of MBSFN. In order to avoid all intra-area and inter-area interference of MBSFN, a novel energy function of Noise-tuning-based Hysteretic Noisy Chaotic Neural Network (NHNCNN) is constructed elaborately based on renewed constraint functions. Also, the judgment process of the stable state of NHNCNN is developed to accelerate system convergence. Specifically, the dichotomy method is adopted jointly to minimize the total number of allocated channels so as to further improve spectrum efficiency. Simulation results show that a feasible solution without any interference can be effectively searched by the improved NHNCNN. Finally, the optimal solution with minimum total channel number is found. Compared with existing algorithms, the proposed algorithm achieves better convergence speed and quality of solution.
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Received: 08 January 2015
Published: 17 July 2015
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| Fund: The National Natural Science Foundation of China (61301122); The General Project on Foundation and Cutting-edge Research Plan of Chongqing (cstc2014jcyjA40052); The Research Program of Chongqing Education Commission (KJ1400405) |
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Corresponding Authors:
Zhang Hai-bo
E-mail: wdkyzl@gmail.com
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