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)
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.
张海波,刘盈娜,李方伟,刘开健. 多媒体多播组播单频网中免干扰动态信道分配[J]. 电子与信息学报, 2015, 37(10): 2438-2445.
Zhang Hai-bo, Liu Ying-na, Li Fang-wei, Liu Kai-jian. Interference-avoidance Dynamic Channel Allocation for Multimedia Broadcast Multicast Service Single Frequency Networks. JEIT, 2015, 37(10): 2438-2445.
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