Design of split-radix FFT pruning for OFDM based cognitive radio system

• Published in: 2010 IEEE Asia Pacific Conference on Circuits and Systems pp. 524 - 527
• Main Authors: Yihu Xu, Chung-Hoon Lee, Myong-Seob Lim
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.12.2010
• Subjects: Algorithm design and analysis; Cognitive radio; Computational complexity; Discrete Fourier transforms; FCC; Flow graphs; OFDM; pruning matrix; split-radix FFT pruning

It is necessary to devise the efficient FFT algorithm which can reduce computational complexity due to multiplication in the butterfly structure with twiddle factors in the OFDM based Cognitive Radio, where zero valued inputs/outputs outnumber nonzero inputs/outputs. Now transformed decomposition is...