Summary
International Symposium on Nonlinear Theory and its Applications
2017
Session Number:B2L-B
Session:
Number:B2L-B-1
Serial-in Parallel-Out Discrete Fourier Transformer with O(N) Cells
Ena Kohno, Akiyoshi Yasuda, Takeshi Kamio, Hisato Fujisaka,
pp.478-480
Publication Date:2017/12/4
Online ISSN:2188-5079
Summary:
We present a tree-structured OFDM demodulator consisting of comb filter blocks. The structure is suitable for demodulating selectively designated sub-band carrier set. Thus, the demodulator can be applicable to adaptive OFDM communications through power lines with fluctuating transmission characteristics. The straightforward execution of the demodulation requires the same order of computational complexity as discrete Fourier transforms. However, exploiting the periodicity of the internal signals of the demodulator reduces the complexity to the same order as that of the fast Fourier transforms.