WPAN环境下快速跳频系统跳频特性研究

Fast Frequency Hopping Characteristics in WPAN Environment

WPAN环境下同一小区内工作的快速跳频系统之间会发生碰撞而影响通信质量。本文提出了一种获得多个共存的跳频系统之间的平均碰撞概率的方法,在仿真WPAN环境下快速跳频系统的典型例子—蓝牙跳频系统的基础上,对该系统的抗自干扰性能进行了重点分析,并推导出小区所容许的平均碰撞概率与可共存的跳频系统的数目之间的关系。本文结论对跳频系统的并行处理以及研究在复杂环境下WPAN的性能,特别是服务质量保证(QoS,Quality of Service)具有重要的指导作用。

Collisions would happen among several fast frequency-hopping systems in the same cell of WPAN environment as to deteriorate communication quality. Accordingly, solution to obtain the average collision probability among coexisting frequency- hopping systems is proposed. Bluetooth frequency-hopping system, as a typical example of fast frequency hopping systems in WPAN environment, is used to analyze the systems anti-self-disturbance performance and deduce equations between the collision probability and the number of coexisting frequency hopping systems in the same cell. Conclusions thus drawn are of great significance to parallel processing on multiple frequency hopping systems and to the analysis of WPANs performances, especially the QoS (Quality of Service) in complicated environments.