A high-throughput memory-based FFT/IFFT processor for OFDM systems

Kuang Hao Lin, Che Ying Shen, Shi Yan Huang, Hou Ming Chen, Liang Hung Wang, Shuenn Yuh Lee

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

1 Citation (Scopus)

Abstract

This study presents a high-throughput memory-based Fast Fourier Transform/Inverse Fast Fourier Transform processor for Orthogonal Frequency Division Multiplexing systems. Modified single-path delay feedback processor is proposed. Compare to original multi-path delay commutator processor, not only the area and power consumption can be reduced, also whole system is easy to dominate. Besides, this new method of calculating twiddle factor decreases the complex coefficients and reduces the ROM usage significantly. Using parallel single-path delay feedback with mixed-radix FFT processor increases the processing speed and achieves the continuity of data throughput. The design is mainly a comparison with multi-path delay commutator processor and single-path delay feedback processor utilizing the base memory method. Introduce the TSMC 0.18um standard cell library; we achieve a 128 point FFT/IFFT processor with high throughput. The operating frequency is up to 50MHz. Besides, the design can be applied to 3GPP LTE and IEEE 802.16e in 1.25MHz bandwidth.

Original languageEnglish
Title of host publication4th International Symposium on Bioelectronics and Bioinformatics, ISBB 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages152-155
Number of pages4
ISBN (Electronic)9781467366090
DOIs
Publication statusPublished - 2015 Dec 2
Event4th International Symposium on Bioelectronics and Bioinformatics, ISBB 2015 - Beijing, China
Duration: 2015 Oct 142015 Oct 17

Publication series

Name4th International Symposium on Bioelectronics and Bioinformatics, ISBB 2015

Other

Other4th International Symposium on Bioelectronics and Bioinformatics, ISBB 2015
Country/TerritoryChina
CityBeijing
Period15-10-1415-10-17

All Science Journal Classification (ASJC) codes

  • Health Informatics
  • Biotechnology
  • Signal Processing
  • Electrical and Electronic Engineering

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