摘要
多波束天线已经广泛用于现代卫星通信系统中,但是在多波束卫星通信系统中基于转发器增益设置的功率分配算法的研究成果很少。旨在最大化系统容量,提出了一种联合功率分配和转发器增益设置的资源优化分配算法。首先建立了功率分配和转发器增益设置联合优化的资源分配模型,该模型考虑了不同波束转发器增益单独可调的因素。然后利用对偶理论和最速下降法,提出了多波束卫星通信系统的功率和转发器增益联合优化算法。仿真结果表明,这里所提出的算法能够提高透明转发卫星通信系统的信道容量。
Multi-beam antenna is now widely-used in modern satellite communication systems. However, few researches are focused on power allocation algorithm based on the repeater gain settings in multi-beam satellite communication system. For purpose to maximize the system capacity, an optimized jointing re- source allocation algorithm of power allocation and repeater gain settings is proposed. Firstly, a jointing re- source allocation model of power allocation and repeater gain settings is established, the factors that the each beam repeater gain is independently adjustable are taken into consideration. Then, by applying the duality theory and steepest descent method, the joint optimization algorithm of power allocation and repeat- er gain settings for multi-beam satellite communication system based on the mentioned model is proposed. Simulation results show that the proposed algorithm could increase channel capacity of the transparent-for- warding satellite communication system.
出处
《通信技术》
2016年第4期436-441,共6页
Communications Technology
关键词
多波束卫星通信系统
功率放大器
资源分配
转发器增益设置
优化算法
multi-beam satellite communication systems
power amplifier
resource allocation
repeatergain setting
optimization algorithm
