摘要
阐述了基于CSS的实时定位系统工作原理和通信协议,通过建立信道中标签发射信号的概率分布模型,分析了标签的防碰撞性能,推导出吞吐率最大时,时隙中的子时隙个数、占空比以及标签数量之间的关系。仿真结果验证了其正确性,通过对子时隙个数、占空比和标签数量等参数进行设计,可达到最高吞吐率,约为18%。
We present work principle and communications protocol of a CSS based realtime localization system. We also analyze anti-collision performance of a tag through establishment of the probability distribution model of tag transmission signals in a channel. We further acquire the relationship among sub-timeslot number, duty cycle and tag number when throughput attains the maximum. Simulation results verify its validity. Its maximum throughput is about 18% through the design for such parameters as sub-timeslot, duty cycle and tag number.
出处
《山东科学》
CAS
2014年第6期43-47,66,共6页
Shandong Science
关键词
啁啾扩频
防碰撞
实时定位
CSS
anti-collision
realtime localization
