Unfolding the Frequency Spectrum for Undersampled Wideband Data
2011 (English)In: Signal Processing, ISSN 0165-1684, E-ISSN 1872-7557, Vol. 91, no 5, 1347-1350 p.Article in journal (Refereed) Published
In this letter, we discuss the problem of unfolding the frequency spectrum for undersampled wideband data. The problem is of relevance to state-of-the-art radio frequency measurement systems, which capture repetitive waveform based on a sampling rate that violates the Nyquist constraint. The problem is presented in a compact form by the inclusion of a complex operator called the CN operator. The ease-of-use problem formulation eliminates the ambiguity caused by folded frequency spectra, in particular those with lines standing on multiples of the Nyquist frequency that are captured with erroneous amplitude and phase values.
Place, publisher, year, edition, pages
Elsevier , 2011. Vol. 91, no 5, 1347-1350 p.
Aliasing, Ambiguities, Frequency Spectrum Reconstruction, Radio Frequency Measurement Systems, Undersampling, Wideband Signals
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-24535DOI: 10.1016/j.sigpro.2010.12.013ISI: 000287905700032ScopusID: 2-s2.0-79551484125OAI: oai:DiVA.org:kth-24535DiVA: diva2:351360
FunderICT - The Next Generation
QC 201010012010-09-142010-09-142016-04-29Bibliographically approved