improved algorithm for odct computation of a running data sequence

Clicks: 186
ID: 208044
2012
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Abstract
Fast windowed update algorithms capable of independently updating the odd discrete cosine transform (ODCT) and odd discrete sine transform (ODST) of a running data sequence are analytically developed. In this algorithm, to compute the ODCT coefficients of a real-time sequence, we do not require the ODST coefficients. Similarly, the ODST coefficients of the shifted sequence can be calculated without using ODCT coefficients. The running input data sequence is sampled using a rectangular window. However, this idea can be easily extended for other windows. The update algorithm derived herein can be used to compute the transform coefficients of the shifted sequence as new data points are available. The complexity of developed algorithm is O(N). The validity of algorithm is tested by MATLAB simulations.
Reference Key
akhter2012journalimproved Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;S. Akhter;V. Karwal;R. C. Jain
Journal Molecular diversity
Year 2012
DOI
10.1155/2012/879626
URL
http://dx.doi.org/10.1155/2012/879626
Keywords
computer engineering computer hardware

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