The Research and Design of a Dual-mode Digital Two-way Radio
Yang Feng, RF Circuits · Journal of Hangzhou Dianzi University · 2009
This paper introduces a dual-mode digital two-way radio that can work in both no centre mode and trunk mode.The system architecture is analyzed firstly,and focus on the speech encode and decode micro-controller and the RF frontend circuit.At last,this paper particularly introduces the duplex communication protocol and the speech encode buffer framework,speech encode algorithm and voice data transmit flowchart.