一种适用于机载MPSK数传的同步技术及FPGA实现  

A Synchronization Method for Airborne Data Transmission Equipment with MPSK Modulation and its FPGA Implementation

作　　者：余金权[1] 

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2007年第3期145-147,共3页Telecommunication Engineering

摘　　要：机载数传设备的高速运动会带来较大的多普勒频移,设计一种不受频偏影响的同步解决方案对数传性能非常重要;突发方式的数据传输也给数传设备的接收同步带来了难度。为此,对于相位调制数传,提出了基于已知相位序列的相关同步算法,可以实现相关输出与收发频偏无关,很好地解决多普勒频移下的同步问题。该算法在FPGA上实现比较简单,性能可靠。The high velocity of the aircraft introduces severe Doppler frequency offset into data transmission equipment, so a synchronization approach that can immunize airborne data transmission equipment against frequency offset is very important. The burst mode transmission makes the synchronization more difficult. In allusion to MPSK modem, the synchronization method proposed in this paper can operate well when severe frequency offset exists. The method is based on the correlation detection of known phase sequence, and can be implemented on FPGAs expediently with reliable performance.

关 键 词：机载设备 数据传输 突发模式 多普勒频移 同步 

分 类 号：TN919.3[电子电信—通信与信息系统]