摘要
DMR物理层标准采用的是4FSK调制技术,其具有TDMA双时隙结构、频谱效率高、通信距离远、抗干扰能力强以及语音数据业务功能丰富等特点。DMR标准提高了频谱使用率,扩大了通信容量,提高了沟通效率,节约了使用成本,使用户获得高效的无线通信服务。在此介绍了一种基于差分解调结构的接收算法,该算法易于实现,并且接收灵敏度满足DMR测试指标。
4FSK technology is adopted in DMR physical layer standard,which has the characteristics of TDMA double time-slot structure,high spectrum efficiency,long communication distance,strong anti-interference ability and rich voice data ser-vice. DMR standard can improve the spectrum utilization,enlarge communication capacity,enhance communication efficiency, save the usage cost,and allow users to obtain high-efficiency wireless communication service. A receiving algorithm based on dif-ferential demodulation structure is introduced in the paper. The algorithm can be realized easily,and its receiving sensitivity can meet DMR testing specification.
出处
《现代电子技术》
2014年第15期70-72,共3页
Modern Electronics Technique
关键词
DMR
差分解调
物理层标准
时隙结构
DMA
differential demodulation
physical layer standard
time-slot structure
