Variable 2K/4K/8K-point FFT/IFFT with compact memory for OFDM-based DVB-T system

Jun Rim Choi, Hui Gon Kim, Seung Soo Han, Sun Cheol Hwang

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

1 Scopus citations

Abstract

We Propose a 2K/4K/8K point FFT (Fast Fourier Transform) for OFDM (Orthogonal Frequency Division Multiplexing) of DVB-H (Digital Video Broadcast Terrestrial) Receiver. The proposed FFT architecture utilizes cascaded radix-4 single path feedback (SDF) structure based on the Radix-2/Radix-4 FFT algorithm.[11] We use block floating point scaling technique in order to increase SQNR. The 2K/8K FFT consists of 5 cascaded stages of radix-4 and 3 stages of radix-2 butterfly units. The SQNR of 58dB is achieved with 10-bit data input, 14-bit internal data and twiddle factors, and 18-bit data output. The core has 75,804 gates with 204,672 bits of RAM and 33,572 bits of ROM using 0.18um CMOS technology

Original languageEnglish
Title of host publication2012 International Conference on Systems and Informatics, ICSAI 2012
Pages977-980
Number of pages4
DOIs
StatePublished - 2012
Event2012 International Conference on Systems and Informatics, ICSAI 2012 - Yantai, China
Duration: 19 May 201220 May 2012

Publication series

Name2012 International Conference on Systems and Informatics, ICSAI 2012

Conference

Conference2012 International Conference on Systems and Informatics, ICSAI 2012
Country/TerritoryChina
CityYantai
Period19/05/1220/05/12

Keywords

  • Block Floating Point
  • Digital Video Broadcast Terrestrial
  • Orthogonal Frequency Division Modulation
  • Single Delay Feedback

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