Publications [#283856] of Qing H. Liu

Papers Published

1. Liu, QH; Nguyen, N, An accurate algorithm for nonuniform fast Fourier transforms (NUFFT's), Ieee Microwave and Guided Wave Letters, vol. 8 no. 1 (January, 1998), pp. 18-20, Institute of Electrical and Electronics Engineers (IEEE), ISSN 1051-8207 [75.650975], [doi]
   (last updated on 2023/08/08)

   Abstract:
   Based on the (m, N, q)-regular Fourier matrix, a new algorithm is proposed for fast Fourier transform (FFT) of nonuniform (unequally spaced) data. Numerical results show that the accuracy of this algorithm is much better than previously reported results with the same computation complexity of O(N log 2 N). Numerical examples are shown for the applications in computational electromagnetics.

   Keywords:
   Fast Fourier transforms;Algorithms;Computational complexity;Matrix algebra;Interpolation;