So, this thesis focused on achieving the measure of long-range flow by adopting the remote communication technology of MODEM.
对此，如何利用调制解调器（MODEM）远程通信技术设计实现远程流量计量系统成为研究的方向。
It is proposed a design principle and method of the baseband QPSK modem in radio communication system with discussion about the key hardware technology and the detailed operating process of the modem.
文章提出了一种软件无线电系统中基带调制解调器的设计原理和实现方法，阐述了系统实现的关键硬件技术和系统详细工作工程。
Designed by digital modem communication system in the practical application of technology is an important technology.
利用数字化方法设计通信系统中的调制解调技术是实际应用中的一项重要技术。
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