【摘要】 本文针对采用跳频数传TDMA接入的Adhoc网络,提出了一种利用跳频同步来实现TDMA时隙同步的方案。考虑到时隙同步是为了使得各个节点的时隙基准对齐,并不需要保持节点之间具体时间一致,利用跳频同步采用分隔符对跳频帧的定位,对定位进行时延补偿后,可实现时间基准基本对齐。由于同步偏差的存在,通过设置保护带允许时隙的抖动来防止冲突发生。本文给出了具体的同步实现方案,并且与其他的Adhoc网络时隙同步方案进行了比较。仿真结果表明,该方案占用了较少的传输带宽,提高了效率,并且可以保证一定的同步精度。更多还原

【Abstract】 To realize Time Division Multiple Access(TDMA)in Ad hoc networks,a new slot synchronization solution based on frequency-hopping synchronization is proposed.Every node keeps a slot counter to position slots.By compensating the separator caught time with the estimated delay,the receiver’s slot counter could synchronize to the sender’s.Guard interval is used to avoid collisions caused by synchronization error.Simulation results show our scheme requires less transmission bandwidth,and the transmission efficiency is improved.更多还原