CAJ | 학술논문

目前已有的卫星功率优化分配策略未考虑功率与带宽的耦合关系.为了进一步提高星上资源的利用率,在考虑各点波束业务需求差异及共信道干扰的基础上,通过构建卫星系统模型,提出一种将卫星功率和带宽联合优化分配的算法.该算法基于系统公平性建立优化目标函数,并采用迭代方法求解资源优化的最优解.与传统固定分配方式相比,这种耦合的资源分配方式可根据当前业务需求和信道条件对星上功率和带宽资源进行实时再分配,提高了系统容量,系统业务匹配率提高10%,具有较高的星上资源利用率.
목전이유적위성공솔우화분배책략미고필공솔여대관적우합관계.위료진일보제고성상자원적이용솔,재고필각점파속업무수구차이급공신도간우적기출상,통과구건위성계통모형,제출일충장위성공솔화대관연합우화분배적산법.해산법기우계통공평성건립우화목표함수,병채용질대방법구해자원우화적최우해.여전통고정분배방식상비,저충우합적자원분배방식가근거당전업무수구화신도조건대성상공솔화대관자원진행실시재분배,제고료계통용량,계통업무필배솔제고10%,구유교고적성상자원이용솔.
The existing resource optimization allocation strategies of multi-beam communication satellite don′t take the coupling relationship of power and bandwidth into consideration. In order to further improve the utiliza-tion of satellite resources,a joint optimization algorithm of power and bandwidth is proposed,which gives full consideration to the co-channel interference and the different traffic demands of each beam. This algorithm is proposed on the basis of the system fairness and can be solved by an iterative method. Compared with the tradi-tional fixed allocation method,the joint optimization algorithm is more flexible on the redistribution of on-board resources,which increases the system capacity and improves 10% of the traffic match ratio through simulation results. The joint optimization algorithm improves the efficiency of the on-board resource utilization.