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针对当前短波栅格化组网频率分配中缺乏对频点可用性和频点组合最优化整体方案的问题,提出了频率分配优化方法。基于ITS(Institute for Telecommunication Sciences)软件的短波链路性能预测方法输出频点接收信噪比,采用线性区间划分将其转化为信道质量矩阵,以信道质量矩阵为输入建立频点组合最优化模型,基于部分匹配交叉和逆转变异给出了该优化模型求解的遗传算法。仿真结果表明:采用该频率分配方法可以明显改善短波栅格化组网的信道质量,典型场景下优化程度大约为30%。
Aiming at the lack of the overall scheme of frequency-point availability and frequency-combination optimization in the current short-wave rasterized network frequency allocation, a frequency allocation optimization method is proposed. Based on ITS (Institute for Telecommunication Sciences) software short-wave link performance prediction method, the received signal-to-noise ratio of the received signal is output, which is converted into a channel quality matrix by linear interval partitioning, and the frequency- The genetic algorithm for solving this optimization model is given based on the partial matching crossover and reversal mutation. The simulation results show that the frequency allocation method can significantly improve the channel quality of the short-wave rasterization network, and the optimization degree under the typical scenario is about 30%.