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Browse Journals & Magazines > Signal Processing, IEEE Trans ...> Volume:45 Issue:5 Help

Use of the symmetrical number system in resolving single-frequency undersampling aliases

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3 Author(s)
Pace, P.E. ; Dept. of Electr. & Comput. Eng., US Naval Postgraduate Sch., Monterey, CA, USA ; Leino, R.E. ; Styer, D.

The relationship between the discrete Fourier transform (DFT) and the symmetrical number system (SNS) is examined as a means of resolving single-frequency undersampling aliases (f>fs/2). It is shown that the DFT naturally encodes the frequency information of a signal in a format that is in the same form as the SNS. Consequently, aliases that result from undersampling a signal can be resolved exactly using r⩾2 channels. To demonstrate the concept, two- and three-channel examples are presented. Using the SNS properties of the DFT, the undersampling aliases can be easily resolved to a much greater extent than previously possible

Published in:
Signal Processing, IEEE Transactions on  (Volume:45 ,  Issue: 5 )

Date of Publication: May 1997

Page(s):
1153 - 1160
ISSN :
1053-587X
INSPEC Accession Number:
5582244
Digital Object Identifier :
10.1109/78.575690
Product Type:
Journals & Magazines
Date of Current Version :
06 August 2002
Issue Date :
May 1997
Sponsored by :
IEEE Signal Processing Society

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