Frequency Analysis using Non-Uniform Sampling with Application to Active Queue Management, Extended
2004 (English)In: Proceedings of the 5th Conference on Computer Science and Systems Engineering, 2004, 147-151 p.Conference paper (Other academic)
In many real-time applications, sample values and time stamps are delivered in pairs, where sampling times are non-uniform. Frequency analysis using non-uniform data occurs in various real life problems and embedded systems, such as vibrational analysis in cars and control of packet network queue lengths. Our contribution is to first overview different ways to approximate the Fourier transform, and secondly to give analytical expressions for how non-uniform sampling affects these approximations. The results are expressed in terms of frequency windows describing how a single frequency in the continuous time signal is smeared out in the frequency domain, or, more precisely, in the expected value of the Fourier transform approximation.
Place, publisher, year, edition, pages
2004. 147-151 p.
Non-uniform sampling, AQM, Frequency analysis
Engineering and Technology Control Engineering
IdentifiersURN: urn:nbn:se:liu:diva-22751Local ID: 2069OAI: oai:DiVA.org:liu-22751DiVA: diva2:243064
5th Conference on Computer Science and Systems Engineering, Norrköping, Sweden, October, 2004