Firstly, this paper carries out analysis and research on the DMR protocol, especially its air interface and voice coding techniques.
本文首先对DMR协议进行了分析和研究，尤其是对其空中接口和语音编码技术进行了详细探讨。
Firstly, this paper carries out analysis and research on the DMR protocol, especially its air interface and voice coding techniques.
本文首先对DMR协议进行了分析和研究，尤其是对其空中接口和语音编码技术进行了详细探讨。
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