摘要
针对卫星高速数据链对带宽以及高速数据传输需求较高的特点,提出将MF-TDMA多址接入协议应用到卫星高速数据链系统中。运用排队理论建立模型,对协议平均等待时延以及吞吐量进行了理论分析,引入了优先级机制,推导了在时隙均匀分配条件下该协议及其改进型的平均等待时延公式。通过计算机仿真表明,该协议在系统保持较高吞吐量的基础上能够保证较低的平均时延,同时满足高优先级用户的需求。
The MF-TDMA protocol is introduced into sate]lite high-speed data link system for its characters such as high requirement of bandwidth and high-speed data transmission. The protocol model is built by queue theory while time-delay and throughput are analyzed theoretically. The priority is in- troduced while the formulas of average delay of MF-TDMA and its improved protocol are derived under the conditions of slots distributed averagely. The results of computer simulation indicate that the improved protocol could guarantee lower average delay on the basis of high system throughput and meet the demands of users with different priorities at the same time.
出处
《电视技术》
北大核心
2012年第5期73-76,共4页
Video Engineering
