8K-point pipelined FFT/IFFT with compact memory for DVB-T using block floating-point scaling technique

Hui Gon Kim, Jin Soen Youn, Ki Tae Yoon, Jun Rim Choi

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

2 Scopus citations

Abstract

We Propose a 2K/8K point FFT (Fast Fourier Transform) for OFDM (Orthogonal Frequency Division Multiplexing) of DVB-T (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 SQNJR. 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 91,800 gates with 184,284 bits of Ram and 33,572 bits of ROM using 0.18um CMOS technology.

Original languageEnglish
Title of host publication2007 ITI 5th International Conference on Information and Communications Technology, ICICT 2007
Pages41-44
Number of pages4
DOIs
StatePublished - 2007
Event2007 ITI 5th International Conference on Information and Communications Technology, ICICT 2007 - Cairo, Egypt
Duration: 16 Dec 200718 Dec 2007

Publication series

Name2007 ITI 5th International Conference on Information and Communications Technology, ICICT 2007

Conference

Conference2007 ITI 5th International Conference on Information and Communications Technology, ICICT 2007
Country/TerritoryEgypt
CityCairo
Period16/12/0718/12/07

Keywords

  • Block floating point
  • Digital video broadcast territorial
  • Orthogonal frequency division modulation
  • Single delay feedback

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