The paper introduces structure of wireless data transmission system,and expounds realization of hardware design circuit and software of DTU based on C8051F020 microprocessor and CDMA module MG801A.

• 对无线数据传输系统的构成进行了研究,阐述了基于C8051F020微处理器和CDMA模块MG801A的数据终端的硬件设计电路和软件接口的实现。