多级业务CDMA随机接入技术研究

Research on Multi-class CDMA Random Access Technique

针对卫星通信系统的特点,研究了结合CDMA和随机接入协议的扩频随机接入方式。在卫星通信的传播时延较长和短数据通信为主的情况下,这种接入技术能根据分组数据等业务的不同需求,实现满足多优先级业务的接入。理论分析和仿真结果表明,这种接入技术可以提高系统的综合性能。

A spread spectrum CDMA random access protocol is proposed.In condition o f high propagatin delay and short message application,it can provide multi -class access for services of different priorities.According to t he theoretic analysis and computer simulation,this methord improves the system performance.