Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Architectures for Dynamic Data Scaling in 2/4/8K Pipeline FFT Cores

Publiceringsår: 2006
Språk: Engelska
Sidor: 1286-1290
Publikation/Tidskrift/Serie: IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Volym: 14
Nummer: 11
Dokumenttyp: Artikel i tidskrift
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.


This paper presents architectures for supporting dynamic

data scaling in pipeline fast Fourier transforms (FFTs), suitable when implementing large size FFTs in applications such as digital video broadcasting and digital holographic imaging. In a pipeline FFT, data is continuously streaming and must, hence, be scaled without stalling the dataflow. We propose a hybrid floating-point scheme with tailored exponent datapath, and a co-optimized architecture between hybrid floating point and block floating point (BFP) to reduce memory requirements for 2-D signal processing. The presented co-optimization generates a higher signal-to-quantization-noise ratio and requires less memory than for

instance convergent BFP. A 2048-point pipeline FFT has been fabricated in a standard-CMOS process from AMI Semiconductor (Lenart and Öwall, 2003), and a field-programmable gate array prototype integrating a 2-D FFT core in a larger design shows that the architecture is suitable for image reconstruction in digital holographic imaging.


  • Electrical Engineering, Electronic Engineering, Information Engineering
  • multiplexing (OFDM)
  • orthogonal frequency-division
  • transform (FFT)
  • hybrid floating point
  • fast Fourier
  • dynamic data scaling
  • digital video broadcasting (DVB)
  • digital holography
  • block floating point (BFP)
  • convergent BFP (CBFP)


  • ISSN: 1063-8210

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen