Channelized broadband signal spectrum analysis based on weighted overlap-add structure.
The digital channelization technology has been applied in many electronic areas, and the real-time broadband spectrum analysis has been the research hotspot in the area of signal processing. This paper introduces the channelized broadband signal spectrum analysis method. Based on the weighted overlap-add (WOLA) structure, this method divides the input broadband signal into several sub-bands or channels, and then downconverts and decimates the sub-band signals to obtain the baseband signals with a low sampling rate. The spectrum analysis results of the input broadband signal are achieved by conducting further decimation, fast Fourier transform and spectrum splicing to the baseband signals. The Matlab simulation results verify the correctness of the WOLA structure, and finally, an experimental platform is designed in detail to verify the practicability of this broadband spectrum analysis method.
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
Lianping
L
Guo
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
Jun
J
Jiang
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
Feng
F
Tan
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
Huiqing
H
Pan
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
Peng
P
Zhang
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.
Hao
H
Zeng
Beijing Shengfeifan Electronic Technology Development Co., Ltd., Beijing, China.
Lihong
L
Bai