FPGA based multi-channel variable-length FFT
implementation
WANG Jiawei;YU Le;YANG Haigang;FENG Guanglang;SUN Jiabin;LUO Yang
【期刊名称】《太赫兹科学与电子信息学报》 【年(卷),期】2017(015)003
【摘要】High-speed real-time digital frequency analysis is one major field of Fast Fourier Transform (FFT) application, such as Synthetic Aperture Radar(SAR) processing and medical imaging. In SAR processing, the image size could be 4 k×4 k in normal and it has become larger over the years. In the view of real-time, extensibility and reusable characteristics, an Field Programmable Gate Array(FPGA) based multi-channel variable-length FFT architecture which adopts radix-2 butterfly algorithm is proposed in this paper. The hardware implementation of FFT is partially reconfigurable architecture. Firstly, the proposed architecture in the paper has flexibility in terms of chip area, speed, resource utilization and power consumption. Secondly, the proposed architecture combines serial and parallel methods in its butterfly computations. Furthermore, on system-level issue, the proposed architecture takes advantage of state processing in serial mode and data processing in parallel mode. In case of sufficient FPGA resources, state processing of serial mode mentioned above is converted to pipeline mode. State processing of pipeline mode achieves
high throughput. 【总页数】6页(469-474) 【关键词】
【作者】WANG Jiawei;YU Le;YANG Haigang;FENG Guanglang;SUN Jiabin;LUO Yang
【作者单位】Institute of Electronics,Chinese Academy of Science,Beijing 100190,China;Computer
and
Information
Engineering,Beijing
Technology and Business University,Beijing 100048,China;Institute of Electronics,Chinese Academy of Science,Beijing 100190,China;Institute of
Electronics,Chinese
of
Academy
of
Science,Beijing Academy
of
100190,China;Institute Electronics,Chinese
Science,Beijing 100190,China;Institute of Electronics,Chinese Academy of Science,Beijing 100190,China 【正文语种】英文 【中图分类】TN911.72 【文献来源】
https://www.zhangqiaokeyan.com/academic-journal-cn_journal-terahertz-science-electronic-information-technology_thesis/0201237880489.html 【相关文献】
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FPGA based multi-channel variable-length FFT implementation
