摘要
分析了基于软件无线电的宽带数字中频接收机中的关键技术-带通采样下变频技术、数字下变频技术、多速率处理技术,并实现了欠采样技术条件的软件系统仿真。由此可见,在现有条件下实现宽带数字中频接收机是可行的。
This paper discusses key technology in the digital intermediate frequency receiver with wide band based on software radio, including down-converter on condition of band-pass-sampiing, digital down-converter, multi-rate digital signal processing, band-pass signal decimating, and achieves software system simulation based on under-sampling. As what is concluded from the above that it is practicable to design the digital intermediate frequency receiver with wide band at present.
出处
《重庆邮电学院学报(自然科学版)》
2006年第4期479-481,492,共4页
Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)
基金
中国工程物理研究院电子工程研究所科技创新基金(S2004Y01)
关键词
欠采样
软件无线电
数字下变频
undersampling of bandpass signal
software radio
digital down converter(DSP)