基于遗传算法的多波束频率复用优化设计

Optimized Design of Multi-beam Frequency Reuse Based on Genetic Algorithm

高通量卫星中多波束天线的同频率波束之间干扰问题,通常以天线载波干扰比(C/I)表征,提高天线C/I性能是获得更高的通信容量途径之一。文中提出了一种多波束天线频率复用优化设计方法,来解决天线C/I性能与频率规划之间的矛盾。在优化过程中将同频波束的频率分配策略作为优化变量,然后利用遗传算法对其进行优化从而实现更高的C/I性能。最后通过一个实例验证该优化算法的有效性和高效性。

The interference between the same frequency beams of multi-beam antennas in High Throughput Satellite(HTS) is usually characterized by Carrier to Interference Power Ratio(C/I) of antenna. Improving the C/I performance of antenna is one of the ways to obtain higher communication capacity. In this paper, a frequency reuse optimization design for multi-beam antenna is proposed to solve the contradiction between C/I performance and frequency planning. In the optimization process, the frequency allocation strategy of the same frequency beams is taken as the optimization variable, and then the genetic algorithm is used to optimize it to achieve higher C/I performance. Finally, an example is given to verify the effectiveness and efficiency of the optimization algorithm.