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Roundoff noise analysis for digital signal power processors using Welch's power spectrum estimationThe noise due to finite-word-length effects is analyzed for digital-signal power processors using Welch's power-spectrum estimation technique to measure the power of Gaussian random signals over a frequency band of interest. The input of the digital signal processor contains a finite-length time interval in which the true Gaussian signal is contaminated by Gaussian noise. The roundoff noise-to-signal ratio in the measurement of the signal power is derived, and computer simulations which validate the analytical results are presented. These results can be used in tradeoff studies of hardware design, such as the number of bits required at each processing stage. The results presented in this paper are currently being used in the design of a digital Doppler processor (Chi et al., 1986) for a radar scatterometer.
Document ID
19870055424
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chi, Chong-Yung
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Long, David
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Li, Fuk-Kwok
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
June 1, 1987
Publication Information
Publication: IEEE Transactions on Acoustics, Speech, and Signal Processing
Volume: ASSP-35
ISSN: 0096-3518
Subject Category
Communications And Radar
Accession Number
87A42698
Distribution Limits
Public
Copyright
Other

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