论文部分内容阅读
分析和实验表明:在低业务量卫星通信系统中(每个站业务量≤1厄兰),用单路单载波按需分配多址联接技术能最大限度地节省费用;同时,在中等业务量卫星通信系统中(每个站业务量5～25厄兰),用时分多址按需分配方式也能大大地减少开支。在以上两种系统中,按需分配多址联接能使我们从两方面受益:需要的总话音电路比较少,需要的总卫星信道比较少。前者能节省地球站的投资,而后者能节省空间段的费用。本文对这些效益进行了分析。并以一个低业务量卫星网为实例给出了分析结果。
Analysis and experiments show that: in low-traffic satellite communication system (each station traffic ≤ 1 Erlan), with single-carrier on-demand distribution multiple access connection technology to maximize cost savings; the same time, In satellite communications systems (between 5 and 25 Erlang per station), time-division multiple access on-demand allocation can also greatly reduce expenses. In both systems, assigning multiple access on demand can benefit us in two ways: fewer total voice circuits are needed and fewer total satellite channels are required. The former can save earth station investment, while the latter can save the cost of space segment. This article analyzes these benefits. And a low-traffic satellite network as an example gives the analysis results.