Efficient prime factor decomposition algorithm and address generation techniques for the computation of discrete cosine transform

Lap Pui Chau, Pak Kong Lun, Wan Chi Siu

Research output: Journal article publicationConference articleAcademic researchpeer-review


An efficient prime factor algorithm for the Discrete Cosine Transform is introduced. In this approach, we formulate the decomposition directly, by using the proposed input and output mapping, and derive a novel in-place address generation scheme, whilst the formulations in the literature require multiple stages or have to be done via the DFT. This approach requires one output index mapping only while the conventional algorithms require two mappings. Hence, by using the proposed mappings and address generation techniques, less temporary storage is required during the computation. A comparison of the address generation time between our approach and the conventional non-in-place approach is also shown.
Original languageEnglish
JournalProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 1 Jan 1998
Externally publishedYes
EventProceedings of the 1998 IEEE International Symposium on Circuits and Systems, ISCAS. Part 5 (of 6) - Monterey, CA, United States
Duration: 31 May 19983 Jun 1998

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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