摘要
提出一种基于码分多址思想的帧时隙ALOHA防碰撞算法(CD-FSA),推导出其标签识别率的表达式,然后针对实际应用中标签与读写器存在相对运动的情况建立数学模型,并给出系统达到平衡状态时离开作用区域的标签组的识别率公式,最后进行计算机仿真实验与分析。结果表明,无论标签是在静止还是运动状态下,CD-FSA算法的标签识别率都优于帧时隙ALOHA算法。
A novel frame slotted ALOHA anti-collision algorithm based on code division multiple aeeess（CI）-FSA） was presented and the expression of tag identification cratio was deduced. And then, the paper built a mathmatical model for the relative motion of tags and a reader in the practical application and gave the formula of identification cratio of the grouped tags lefting the region when the system reaches equilibrium state. Finally, computer simulation and analysis were made. The results show that whether tags are the state of stationary or movement, tag ientification cratio of the CD-FSA algorithm is higher than that of the frame slotted ALOHA algorithm.
出处
《计算机科学》
CSCD
北大核心
2013年第6期76-79,共4页
Computer Science
