Mobitex无线终端的设计

Design of Mobitex Wireless Terminal

介绍了Mobitex无线数据通信技术特点和网络结构,讨论了Mobitex采用GMSK调制技术的优越性。在兼容Mobitex网络标准的基础上,提出了以AT89S53单片机为控制核心,以CMX990 GMSK半双工Modem芯片为中心的无线终端设计方案。实验证明,这种无线终端电路工作性能良好,电磁兼容符合标准要求,通信误码率较小,很好的满足了Mobitex网络通信要求。

Introduced technical characteristics and network structure of Mobitex wireless data communication, and discussed advantage of Mobitex adopting GMSK modulation technology. Based on compatible with the Mobitex network criterion, a design proposal of wireless terminal with central by CMX990 GMSK half-duplex modem chip is implemented with AT89S53 singlechip as control core. Experiments has proved that operating performance of this wireless terminal circuit is super, and electromagnetic compatible meet criterions ,with less communication error code rate ,and meet requirements of Mobitex network communication.