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IEICE TRANSACTIONS on Fundamentals

A High-Speed Two-Parallel Radix-24 FFT/IFFT Processor for MB-OFDM UWB Systems

Jeesung LEE, Hanho LEE

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Summary :

This paper presents a novel high-speed, low-complexity two-parallel 128-point radix-24 FFT/IFFT processor for MB-OFDM ultrawideband (UWB) systems. The proposed high-speed, low-complexity FFT architecture can provide a higher throughput rate and low hardware complexity by using a two-parallel data-path scheme and a single-path delay-feedback (SDF) structure. The radix-24 FFT algorithm is also realized in our processor to reduce the number of complex multiplications. The proposed FFT/IFFT processor has been designed and implemented with 0.18-µm CMOS technology in a supply voltage of 1.8 V. The proposed two-parallel FFT/IFFT processor has a throughput rate of up to 900 Msample/s at 450 MHz while requiring much smaller hardware complexity and low power consumption.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.4 pp.1206-1211
Publication Date
2008/04/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e91-a.4.1206
Type of Manuscript
PAPER
Category
VLSI Design Technology and CAD

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