TY - GEN
T1 - Research on improved CORDIC algorithm for high accuracy DDS signal source
AU - Wu, Caipeng
AU - Zhou, Binquan
AU - Fang, Jiancheng
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016/6/13
Y1 - 2016/6/13
N2 - The Direct Digital Synthesis (DDS) signal source that adopts ROM look-up table has serious signal spurious and deterioration of spectral properties, so it can't meet the requirements of Nuclear Magnetic Resonance Gyroscope (NMRG). For the problem, on the basis of basic principle analysis of Coordinate Rotation Digital Computer (CORDIC) algorithm, a new improved algorithm is proposed, which combines the scaling-free architecture and the conventional architecture, and through the error analysis, upper bound of the errors can reach at 13th deci mal bit position. Then, a design of novel DDS signal source based on the improved CORDIC algorithm is realized on Field Programmable Gate Array (FPGA). Experimental results show that the signal accuracy of the DDS based on the improved CORDIC can reach 10-5 order of magnitude and spectrum spur is small. The improved algorithm has advantages in speed, accuracy and low consumption, which are significant in developing high accuracy DDS signal source.
AB - The Direct Digital Synthesis (DDS) signal source that adopts ROM look-up table has serious signal spurious and deterioration of spectral properties, so it can't meet the requirements of Nuclear Magnetic Resonance Gyroscope (NMRG). For the problem, on the basis of basic principle analysis of Coordinate Rotation Digital Computer (CORDIC) algorithm, a new improved algorithm is proposed, which combines the scaling-free architecture and the conventional architecture, and through the error analysis, upper bound of the errors can reach at 13th deci mal bit position. Then, a design of novel DDS signal source based on the improved CORDIC algorithm is realized on Field Programmable Gate Array (FPGA). Experimental results show that the signal accuracy of the DDS based on the improved CORDIC can reach 10-5 order of magnitude and spectrum spur is small. The improved algorithm has advantages in speed, accuracy and low consumption, which are significant in developing high accuracy DDS signal source.
KW - Booth's algorithm
KW - Coordinate Rotation Digital Computer (CORDIC)
KW - Direct Digital Synthesis (DDS)
KW - rotation angle optimization
KW - scaling-free
UR - https://www.scopus.com/pages/publications/84979276854
U2 - 10.1109/ICCSNT.2015.7490979
DO - 10.1109/ICCSNT.2015.7490979
M3 - 会议稿件
AN - SCOPUS:84979276854
T3 - Proceedings of 2015 4th International Conference on Computer Science and Network Technology, ICCSNT 2015
SP - 1351
EP - 1355
BT - Proceedings of 2015 4th International Conference on Computer Science and Network Technology, ICCSNT 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th International Conference on Computer Science and Network Technology, ICCSNT 2015
Y2 - 19 December 2015 through 20 December 2015
ER -