A 2048 complex point FFT processor for DAB systems

Se Ho Park, Dong Hwan Kim, Dong Seog Han, Kyu Seon Lee, Sang Jin Park, Jun Rim Choi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

In this paper, we propose an implementation method for a single-chip 2048 complex point FFT in terms of sequential data processing. In order to reduce the required chip area for the sequential processing of 2 K complex data, a DRAM-like pipelined commutator architecture is used. The 16-point FFT is a basic building block of the entire FFT chip, and the 2048-point FFT consists of the cascaded blocks with five stages of radix-4 and one stage of radix-2. Since each stage requires rounding of the resulting bits while maintaining the proper S/N ratio, the convergent block floating point (CBFP) algorithm is used for the effective internal bit rounding. As a result, the proposed structure brings about the 55% chip size reduction compared with the conventional approach [1].

Original languageEnglish
Title of host publicationICVC 1999 - 6th International Conference on VLSI and CAD
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages309-312
Number of pages4
ISBN (Print)0780357272, 9780780357273
DOIs
StatePublished - 1999
Event6th International Conference on VLSI and CAD, ICVC 1999 - Seoul, Korea, Republic of
Duration: 26 Oct 199927 Oct 1999

Publication series

NameICVC 1999 - 6th International Conference on VLSI and CAD

Conference

Conference6th International Conference on VLSI and CAD, ICVC 1999
Country/TerritoryKorea, Republic of
CitySeoul
Period26/10/9927/10/99

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