National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

FFT-Based Spectrum Analysis Using a Digital Signal Processor.

ADA401369

Publication Date	2001
Personal Author	Dorcey, C. T.
Page Count	80
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.
Keywords	Signal processing Digital systems Fast fourier transforms Spectrum analyzers Algorithms Portable equipment Optimization Parallel processing Parallel processors Memory devices Data storage systems Hierarchies Compilers Vliw(Very-long instruction word) Finite precision
Source Agency	Non Paid ADAS
Corporate Authors	Naval Postgraduate School, Monterey, CA.
Document Type	Thesis
Title Note	Master's thesis.
NTIS Issue Number	200219

FFT-Based Spectrum Analysis Using a Digital Signal Processor.

FFT-Based Spectrum Analysis Using a Digital Signal Processor.
ADA401369

Publication Date	2001
Personal Author	Dorcey, C. T.
Page Count	80
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.
Keywords	Signal processing Digital systems Fast fourier transforms Spectrum analyzers Algorithms Portable equipment Optimization Parallel processing Parallel processors Memory devices Data storage systems Hierarchies Compilers Vliw(Very-long instruction word) Finite precision
Source Agency	Non Paid ADAS
Corporate Authors	Naval Postgraduate School, Monterey, CA.
Document Type	Thesis
Title Note	Master's thesis.
NTIS Issue Number	200219