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FPGA Implementation of Recursive DFT based Phase Measurement Algorithm  

Ahn Byoung-Sun (중앙대학교 전자전기공학부)
Kim Byoung-Il (중앙대학교 전자전기공학부)
Chang Tae-Gyu (중앙대학교 전자전기공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers D / v.54, no.3, 2005 , pp. 191-193 More about this Journal
Abstract
This paper proposes a phase measurement algorithm which is based on the recursive implementation of sliding-DFT. The proposed algorithm is designed to have a robust behavior against the erroneous factors of frequency drift, additive noise, and twiddle factor approximation. Four channel power-line phase measurement system is also designed and implemented based on the time-multiplexed sharing architecture of the proposed algorithm. The proposed algorithm's features of phase measurement accuracy and its robustness against the finite wordlength effects can provide a significant impact especially for the ASIC or microprocessor based embedded system applications where the enhanced processing speed and implementation simplicity are crucial design considerations.
Keywords
Sliding-DFT; FPGA;
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  • Reference
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