Title :
A Radix 22 based parallel pipeline FFT processor for MB-OFDM UWB system
Author :
Li, Nuo ; Van Der Meijs, N.P.
Author_Institution :
Fac. of Electr. Eng., Math. & Comput. Sci. (EEMCS), Delft Univ. of Technol., Delft, Netherlands
Abstract :
This paper presents a novel parallel pipeline FFT processor especially tailored for Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) Ultra Wideband (UWB) system, which was defined by ECMA International. The proposed Radix 22 Parallel Pipeline processor, which employs two parallel data path Radix 22 algorithm and single-path delay feedback (SDF) pipeline architecture, is a small-area and low-power-consumption solution for MB-OFDM UWB system. Both FPGA Xilinx Virtex4 and ASIC 90 nm technology, 1 V supply voltage targeted synthesis results of this architecture are presented. It is shown from the results that, due to the revised algorithm and novel architecture, the required clock frequency is 264 MHz to meet the ECMA requirement. Meanwhile, the required gates are 39000 without testing block and the corresponding area is 181140 ¿m2.
Keywords :
OFDM modulation; application specific integrated circuits; fast Fourier transforms; field programmable gate arrays; ultra wideband communication; ASIC technology; ECMA International; FPGA Xilinx Virtex4; MB-OFDM UWB system; Radix 22 parallel pipeline FFT processor; frequency 264 MHz; multiband orthogonal frequency division multiplexing ultra wideband system; parallel data path Radix 22 algorithm; single-path delay feed¬ back pipeline architecture; Application specific integrated circuits; Clocks; Delay; Feedback; Field programmable gate arrays; Frequency; OFDM; Pipelines; Ultra wideband technology; Voltage;
Conference_Titel :
SOC Conference, 2009. SOCC 2009. IEEE International
Conference_Location :
Belfast
Print_ISBN :
978-1-4244-4940-8
Electronic_ISBN :
978-1-4244-4941-5
DOI :
10.1109/SOCCON.2009.5398013
