FFT-based spectrum analysis using a Digital Signal Processor
Authors
Dorcey, Charles T.
Subjects
Advisors
Loomis, Herschel H.
Date of Issue
2001-12
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
A spectrum analyzer based on Fast Fourier Transform (FFT) techniques was implemented using the TMS320C6201 Digital Signal Processor device manufactured by Texas Instruments. Portable C programs demonstrated optimization of the FFT algorithm for maximum speed. Previously published algorithms were adapted to the unique features of this Very-Long Instruction Word (VLIW) parallel processor and application, taking into account fixed-point arithmetic, parallel operation of functional units, and a hierarchy of memory capacities and speeds. The effectiveness of the VLIW C compiler, with automatic optimization, is compared with an explicitly-scheduled assembly-language program. The resulting program was then used to demonstrate the crucial need to keep program data in the Internal Data Memory to preserve hard-won performance gains.
Type
Thesis
Description
Series/Report No
Department
Electrical Engineering
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
xvi, 63 p. ;
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.