现代电子技术Issue(16)：28-29,33,3.
基于DSP的DMR终端时隙同步设计与实现
Design and implementation of time-slot synchronization for DMR terminal based on DSP
王冬海 1杨青山 1胡汉武1
作者信息
- 1. 广州海格通信集团股份有限公司，广东 广州 510663
- 折叠
摘要
Abstract
Time-lot synchronization is a most important procedure in TDMA wireless trunked communication system. Most of the researches about slot-synchronization were focused on the synchronization position searching algorithm,but few descrip-tions on how to implement on the specific platform. Therefore,according to the special orthogonal or negative correlation each other of DMR protocol,the location of the synchronization sequences in the current demodulation data can be found out by searching the synchronization sequences located in the centre of a DMR burst. When DMA interrupt and timer interrupt are oc-curred,the time length needed by the timer is figured out,and the value of the timer’s register is reset. The adjustment of timing length for the timer can achieve the synchronization of the timer interrupt and time-slot edge. The testing result shows that syn-chronization error of this method is less than 10 us. It can satisfy the requirements of DMR protocol system.关键词
DMA/DMR/TDMA/时隙同步Key words
DMA/DMR/TDMA/time-slot synchronization分类
信息技术与安全科学引用本文复制引用
王冬海,杨青山,胡汉武..基于DSP的DMR终端时隙同步设计与实现[J].现代电子技术,2014,(16):28-29,33,3.
