1 Ocak 2021 Dergi makalesi Açık Erişim

Ergul, Pakize; Ugurdag, H. Fatih; Davutoglu, Dogancan

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    <subfield code="a">FFT is one of the basic building blocks in many applications such as sensors, radars, communications. For some applications, e.g., real-time spectral monitoring and analysis, FFT needs to be "run-time configurable" so that the system is real-time. When examining the previous work on configurable real-time (FPGA-based) FFT implementations, we see that the degree of configurability is less than what is desired. In this paper, a new FFT architecture is proposed, which has a high degree of run-time configurability and yet does not compromise area or throughput. The configurable parameters of this design are the number of FFT points (up to 64K), forward versus inverse mode, output order (natural or bit-reversed), and the number of streams (up to 4). The proposed FFT architecture (HC-FFT) is designed using a parallel and pipelined radix-2 multipath delay commutator (MDC) FFT structure. HC-FFT was implemented on a Xilinx Kintex Ultrascale FPGA and was verified against the Xilinx FFT IP. Besides its high degree of run-time configurability, HC-FFT is quite efficient and offers a very high throughput of 87 Gbps with a quite reasonable area.</subfield>
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    <subfield code="u">Ozyegin Univ, Fac Engn, Dept Elect &amp; Elect Engn, Istanbul, Turkey</subfield>
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