【摘要】 现有的WEBee系统可通过模拟接收器的标准时域波形在物理层面实现WiFi到ZigBee的跨网通信,但该系统存在单次传输帧接收率不高,符号错误率较大等局限.针对该局限,本文提出了一种基于循环前缀前的编码拆分优化方案,主要思想是对ZigBee前导码中的同步码序列进行编码拆分,可有效降低循环前缀操作时出现的错误,提高帧接收率.结果表明该方案优化系统单次传输的帧接收率可达65.2%,相比原系统提高了8.1%,且单次传输的符号错误率从2.7%降低至1.8%.更多还原

【Abstract】 Recently, the WEBee system achieved the one-way communication from WiFi to ZigBee on the physical level by emulating the time-domain signal of receiver. However, there are some shortcomings in WEBee such as short FRR(Frame Receive Rate) of single transmission frames and a large SER(Symbol Error Ratio). In view of the above-mentioned facts, this paper proposes an optimization scheme via split coding before cyclic prefix(CP). The main idea is splitting and coding the synchronization word sequences in ZigBee’s preamble. It can reduce the error occurred in the CP operation effectively and improve the FRR. The results show that the maximum FRR can reach65.2%, which is8.1% higher than the original system. Furthermore, the SER is reduced from2.7% to1.8%.更多还原