论文部分内容阅读
针对蜂窝网络现有动态信道分配模型不足的问题,提出了一种基于最小化小区间违反电磁兼容约束的小区数目以及信道数目的动态信道分配模型。针对建立的数学模型,基于遗传算法提出了蜂窝网络的动态信道分配算法,获得了一组干扰最小的信道分配,避免了移动用户间的干扰。对几个著名的21小区Philadelphia benchmark问题进行了计算机仿真,结果表明本研究提出的算法能够得到一组有效的信道分配,提高了频谱利用率及系统容量。
Aiming at the problem of the existing dynamic channel allocation model in cellular networks, a dynamic channel assignment model based on minimizing the number of cells and the number of cells that violate the EMC constraints between cells is proposed. According to the established mathematical model, a dynamic channel allocation algorithm of cellular network is proposed based on genetic algorithm, and a group of channel interference with the least interference is obtained, which avoids the interference among mobile users. Several well-known 21-district Philadelphia benchmark problems were simulated by computer. The results show that the proposed algorithm can obtain an effective channel allocation and improve the spectrum utilization and system capacity.