Title page for etd-0901109-043220


[Back to Results | New Search]

URN etd-0901109-043220
Author Yen-Chun Cheng
Author's Email Address ianianli@yahoo.com.tw
Statistics This thesis had been viewed 5571 times. Download 901 times.
Department Computer Science and Engineering
Year 2008
Semester 2
Degree Master
Type of Document
Language English
Title Table-Based Design of Arithmetic Function Units for Angle Rotation and Rectangular-to-Polar-Coordinate Conversion
Date of Defense 2009-07-29
Page Count 139
Keyword
  • interpolation
  • CORDIC
  • Newton-Raphson
  • piecewise
  • Taylor-series expansion
  • Abstract In this thesis, an efficiency method for reducing the rotation ROM size in table-based architecture is proposed. The original rotation can be divided into two stages, coarse stage and fine stage. Our approach modifies the previous two-stage rotation method and proposes a multi-stage architecture and discuses three-stage phase calculation. The effect of table reduction is more apparently for higher accuracy requirement in the three-stage architecture. The total area of the previous two-stage architecture is larger than the proposed table-reduced three-stage architecture because the table size takes a significant ratio of the total area especially when the required bit accuracy is large. In the proposed three-stage design, there are two different types of architectures, depending on the rotation angles in the first and second rotation stages. Comparison of different types of architecture with the previous method shows that our designs indeed reduce the table size and the total area significantly.
    Advisory Committee
  • Chung-Ho Chen - chair
  • Jih-ching Chiu - co-chair
  • Shiann-Rong Kuang - co-chair
  • Pei-Yin Chen - co-chair
  • Shen-Fu Hsiao - advisor
  • Files
  • etd-0901109-043220.pdf
  • indicate access worldwide
    Date of Submission 2009-09-01

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have more questions or technical problems, please contact eThesys