DocumentCode
1283035
Title
Analysis of samples of wideband signals taken at irregular, sub-Nyquist, intervals
Author
Bagshaw, P.C. ; Sarhadi, M.
Author_Institution
Centre for Speech Technol. Res., Edinburgh Univ., UK
Volume
27
Issue
14
fYear
1991
fDate
7/4/1991 12:00:00 AM
Firstpage
1228
Lastpage
1230
Abstract
A modified discrete Fourier transform is stated for estimating the spectrum of a signal sampled at irregular intervals. Additive pseudorandom sampling is proposed as an irregular sampling scheme. The transform periodicity and symmetrical properties are derived for the scheme. Alias-free spectral analysis of a bandlimited periodic signal is possible when using additive pseudorandom sampling with a maximum sampling rate below that specified by the Nyquist criterion.
Keywords
computerised signal processing; fast Fourier transforms; Nyquist criterion; additive pseudorandom sampling; aliasfree spectral analysis; bandlimited periodic signal; discrete Fourier transform; irregular sampling scheme; sampling rate; signal sampled at irregular intervals; spectrum estimation; symmetrical properties; transform periodicity; wideband signals;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19910771
Filename
81157
Link To Document