流星余迹系统信道在星状拓扑结构下的设计优化  

Improved design of meteor burst communication network system constructed in star technology

作　　者：安亮[1] 梅顺良[1] 

机构地区：[1]清华大学电子工程系微波与数字通信国家重点实验室,北京100084

出　　处：《电子测量技术》2008年第1期46-49,共4页Electronic Measurement Technology

摘　　要：传统星状拓扑结构的流星余迹通信网络主站与从站采用相同的定速率定功率传输机制。综合星状拓扑网络结构特点与流星余迹信道的特性,本文在考虑传输延时,限带宽等实际因素下分别提出主站与从站不同的传输机制来优化性能。适合相对高数据吞吐量的主站的限带宽变速率传输机制使主站传输效率与定速率传输相比上升了450%;适合对耗能要求敏感的从站的变功率传输机制,在不降低其定速率传输能力的基础上节省55%的发射能量。本文还给出了主从站在指数衰减的流星信道模型下的仿真结果。Nowadays, many meteor burst communication （MBC） network system is constructed in star topology. The traditional scheme for both master and remote stations is the same. The scheme which is widely used is fix-rate, fix- power transmission. With a view of many realistic considerations, such as transmission delaying and limited bandwidth, this paper proposes different schemes for master stations and remote stations. The band-limited adaptive rate transmitting scheme in master station can improve 450% efficiency comparing with the fixed rate scheme. Also, the scheme which uses adaptive power transmission technique for the power consumption sensitive remote stations can save 55% energy comparing with the traditional method without decreasing the transmitting ability. This paper also gives the trartsmission channel simulation results of the scheme under MBC exponential decaying channel model.

关 键 词：流星余迹通信 星状拓扑 变速率传输 变功率传输 

分 类 号：TP393.15[自动化与计算机技术—计算机应用技术]