Estimation of frequency offset using warped discrete-Fourier transform

被引：14
|
作者：
Venkataramanan, R
Prabhu, KMM [1 ]
机构：
[1] Indian Inst Technol, Dept Elect Engn, Madras 600036, Tamil Nadu, India
[2] Univ Michigan, Dept EECS, Ann Arbor, MI 48109 USA
来源：
SIGNAL PROCESSING | 2006年 / 86卷 / 02期
关键词：
DFT; NDFT; WDFT; FFT; computational complexity;
D O I：
10.1016/j.sigpro.2005.05.035
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, the problem of estimating a small frequency offset in a signal with a large carrier frequency is addressed. The warped discrete-Fourier transform (WDFT) [A. Makur, S.K. Mitra, IEEE Trans. Circuits Systems-I: Fundam. Theory Appl. 6 (9) (September 2001) 1086-1093] is used and the accuracy of estimation and computational complexity of this technique is compared with the conventional discrete-Fourier transform (DFT) and the nonuniform discrete-Fourier transform (NDFT). A numerical example is provided to illustrate the comparison. (C) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：250 / 256
页数：7
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