Technique of reducing sampling frequency in software defined radio
Fan Yan · Journal of Heilongjiang Institute of Science and Technology · 2007
Directed at increasing data due to intermediate frequency sampling in software defined radio system,the paper introduces the use of the technique of digital down-converter in the receiver to reduce the DSP computation press of the baseband.This paper is focused on reducing sampling frequency in digital down-converter technique,analyzing the scheme of single level of integral multiple decimation technique and multilevel of integral multiple decimation technique,and performing the simulation analysis with MATLAB.The simulation result shows the necessity of using multilevel of duple decimation technique firstly in the same technique target and multilevel of integral multiple decimation technique is the second selection.Single level of integral multiple decimation technique is not used unless you have no other ways.The study concludes that it is important to guide how to select the best scheme of reducing sampling frequency technique in practice.