A green FFT processor with 2.5-GS/s for IEEE 802.15.3c (WPANs)

Shen Jui Huang*, Sau-Gee Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

27 Scopus citations

Abstract

This paper presents a high-throughput FFT processor for IEEE 802.15.3c (WPANs) standard. To meet the 2.59 Giga-sample/s throughput requirements, radix-16 FFT algorithm is adopted and reformulated to an efficient form so that the required number of butterfly stages is reduced and the proposed radix-16 FFT butterfly processing element (PE) can be optimally pipelined. Specifically, the radix-16 butterfly PE consists of one radix-4 and two radix-2 cascaded pipelined butterfly units. It facilitates low-complexity realization of radix-16 butterfly operation and high operation speed due to the optimized pipelined structure. Hardware reuse and low-power schemes are also devised to reduce both area and power consumption. Moreover, a multibank memory scheme is used to support up to 16-times I/O capability of a single-bank memory, which can greatly reduce the input/output time of FFT data samples. As a result, the proposed radix-16 FFT processor is area-efficient with high data processing rate and hardware utilization efficiency. The EDA synthesis results show that the proposed design has 2.59 GS/s throughput and it consumes 103.5 mW by using UMC 90nm process.

Original languageEnglish
Title of host publication1st International Conference on Green Circuits and Systems, ICGCS 2010
Pages9-13
Number of pages5
DOIs
StatePublished - 20 Sep 2010
Event1st International Conference on Green Circuits and Systems, ICGCS 2010 - Shanghai, China
Duration: 21 Jun 201023 Jun 2010

Publication series

Name1st International Conference on Green Circuits and Systems, ICGCS 2010

Conference

Conference1st International Conference on Green Circuits and Systems, ICGCS 2010
CountryChina
CityShanghai
Period21/06/1023/06/10

Keywords

  • FFT
  • OFDM
  • WPANs

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    Huang, S. J., & Chen, S-G. (2010). A green FFT processor with 2.5-GS/s for IEEE 802.15.3c (WPANs). In 1st International Conference on Green Circuits and Systems, ICGCS 2010 (pp. 9-13). [5543105] (1st International Conference on Green Circuits and Systems, ICGCS 2010). https://doi.org/10.1109/ICGCS.2010.5543105