Unfolding the Frequency Spectrum for Undersampled Wideband Data

Nader, Charles,1982-Högskolan i Gävle,KTH,Signalbehandling,ACCESS Linnaeus Centre,University of Gävle, Sweden; Vrije Universiteit Brussel,, Belgium,Elektronik (författare)

QC 20101001
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.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
Aliasing
Ambiguities
Frequency Spectrum Reconstruction
Radio Frequency Measurement Systems
Undersampling
Wideband Signals
Signal processing
Signalbehandling

Björsell, NiclasHögskolan i Gävle,Elektronik(Swepub:hig)nbl (författare)
Händel, Peter,1962-KTH,Signalbehandling,ACCESS Linnaeus Centre,Royal Insstitute of Technology, Signal Processing Lab(Swepub:kth)u1htctiy (författare)
KTHSignalbehandling (creator_code:org_t)

Av författaren/redakt...: Nader, Charles, ...; Björsell, Niclas; Händel, Peter, 1 ...

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