一种用于高速数据流的并行数字下变频方法  

A Method of Parallel Digital Down-converting Used in High Speed Data Streams

作　　者：史秀花 刘凯 王志诚 

机构地区：[1]上海无线电设备研究所,上海200090

出　　处：《制导与引信》2015年第2期49-53,59,共6页Guidance & Fuze

摘　　要：针对吉赫兹采样信号无法直接在FPGA中实现乘法和加法等运算,对并行数字下变频技术进行研究,实现FPGA对高速采样信号的下变频处理。对吉赫兹采样下的并行数字下变频技术进行数学仿真和硬件实现,结果表明并行数字下变频技术可以应用在吉赫兹采样信号中。To solve the problems that GHz sampling signal can＇t be directly implemented multiplication and addition in FPGA,parallel digital down-converting is studied,in order to realize that FPGA can complete down-converting processing of high speed sampling signal.Parallel digital down-converting techniques of GHz sampling signal is simulated and implemented,and the results show that parallel digital down-converting can be used on GHz sampling signal.

关 键 词：数字下变频 多相滤波 并行处理 

分 类 号：TN957.51[电子电信—信号与信息处理]