Low-power, high-speed FFT processor for MB-OFDM UWB application

Guixuan Liang; Danping He; Eduardo de la Torre; Teresa Riesgo

doi:10.1117/12.890303

3 May 2011 Low-power, high-speed FFT processor for MB-OFDM UWB application

Guixuan Liang, Danping He, Eduardo de la Torre, Teresa Riesgo

Proceedings Volume 8067, VLSI Circuits and Systems V; 80670E (2011) https://doi.org/10.1117/12.890303
Event: SPIE Microtechnologies, 2011, Prague, Czech Republic

Abstract

This paper presents a low-power, high-speed 4-data-path 128-point mixed-radix (radix-2 & radix-2²) FFT processor for MB-OFDM Ultra-WideBand (UWB) systems. The processor employs the single-path delay feedback (SDF) pipelined structure for the proposed algorithm, it uses substructure-sharing multiplication units and shift-add structure other than traditional complex multipliers. Furthermore, the word lengths are properly chosen, thus the hardware costs and power consumption of the proposed FFT processor are efficiently reduced. The proposed FFT processor is verified and synthesized by using 0.13 μm CMOS technology with a supply voltage of 1.32 V. The implementation results indicate that the proposed 128-point mixed-radix FFT architecture supports a throughput rate of 1Gsample/s with lower power consumption in comparison to existing 128-point FFT architectures.

Citation Download Citation

Guixuan Liang, Danping He, Eduardo de la Torre, and Teresa Riesgo "Low-power, high-speed FFT processor for MB-OFDM UWB application", Proc. SPIE 8067, VLSI Circuits and Systems V, 80670E (3 May 2011); https://doi.org/10.1117/12.890303

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available