NDLI: Fixed-point fixed-precision dynamic kernel function FFT processor for wideband signal detection

Content Provider	IEEE Xplore Digital Library
Author	Lee, Y.-H.G. Chen, C.-I.H.
Copyright Year	2010
Description	Author affiliation: Department of Electrical Engineering, Wright State University, Dayton, OH 45435 U.S.A. (Lee, Y.-H.G.; Chen, C.-I.H.)
Abstract	A 2.048 GSPS fixed-point fixed-precision dynamic kernel function FFT processor with variable truncation scheme (VTS) is proposed and implemented for real-time wideband signal detection. Using Xilinx System Generator, single-signal detection is demonstrated for a bandwidth of 912 MHz with 16 MHz channelization and output throughput rates of 62.5 ns. The proposed design has an averaged single-signal spurious-free dynamic range (SFDR) of 26 dB and the ability to detect a weak input signal utilizing only the often truncated least significant bits of the analog-to-digital converter. This is possible for a fixed-precision FFT design due to the embedded variable truncation scheme to extend the total dynamic range (DR) while preserving the SFDR relationship. Additional case studies utilizing different dynamic kernel function and inter-stage precision shows important area and performance trade-offs when utilized in a high-speed wideband FFT processor without the use of decimators.
Starting Page	397
Ending Page	401
File Size	716234
Page Count	5
File Format	PDF
ISBN	9781424428328
ISSN	10915281
DOI	10.1109/IMTC.2010.5488134
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Kernel Wideband Signal detection Dynamic range Field programmable gate arrays Throughput Bandwidth Analog-digital conversion OFDM Receivers dynamic kernel function FFT Digital wideband receiver digital microwave receiver adaptive thresholding instantaneous dynamic range (IDR)
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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