突发信号的位定时同步研究  

Research on Bit Timing Synchronization of Burst Signal

作　　者：王汉[1] 王力男[1] WANG Han WANG Li-nan(The 54th Research Institute of CETC ,Shijiazhuang Hebei 050081 ,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2017年第1期27-29,34,共4页Radio Communications Technology

基　　金：国家部委基金资助项目

摘　　要：在TDMA系统中,信号的定时同步对时隙的正确接收有重要意义,位定时的偏移会引起星座图相点的偏移,严重时甚至无法解调。针对TDMA系统突发信号数据短、不连续的特点,结合民用信关站同步参考信号的设计指标,对突发信号的位定时同步进行了研究。选择了前馈式定时同步的非线性变换算法进行分析并仿真,由仿真结果可以看出,非线性变换法中的一次幂算法满足信关站同步参考信号的定时精度,能够更好地实现系统设计。n the TDMA system, the timing synchronization of the signals is of great significance to the correct reception of time slots and the offset of phase points in the constellation diagram is caused by the offset of the bit timing, seriously when even unable to demodulation.In view of the short data length and discontinuous characteristics of burst signal in TDMA system, the bit timing synchronization of burst signal is studied which is combined with the design index of synchronous reference signal in the civil gateway station.The nonlinear transform algorithm of the feedforward and timing synchronization is analyzed and simulated. The first power algorithm, belong to nonlinear transform methods, can satisfy the accuracy of synchronization reference signal in the gateway station and better meet the design of the system which can be seen from the simulation results.

关 键 词：突发信号 位定时 非线性变换 内插 

分 类 号：TN911[电子电信—通信与信息系统]