NDLI: Cascaded interpolation-filter-delay-decimation algorithm without additional delay

Content Provider	IET Digital Library
Author	Guo, Wei Yan, Yili Jia, Min Wu, Xiaoming Tang, Chi
Abstract	Accurate time delay is indispensable for many sorts of signal processing applications particular in the field of communication and detection. Traditionally, due to easy operation, interpolation-filter-delay-decimation (IFDD) algorithm was regarded as an intuitive and straightforward way to delay specific signals. However, the computational complexity of this approach will increase sharply with the increase of interpolation factor. In addition, the IFDD algorithm will also induce a fixed additional delay in the delayed signal, limiting its widespread application. To solve these issues, this study presented a cascaded IFDD algorithm without additional delay (C-IFDD-WAD) by decomposing the large interpolation factor into several small interpolation factors. The authors obtained the expression of C-IFDD-WAD algorithm and analysed the spectrum characteristics of C-IFDD-WAD algorithm in this study. Their theoretical analysis combined with the simulation results show that the computation cost of C-IFDD-WAD significantly decreased in the form of cascade based on their present new method. Moreover, the additional delay of traditional IFDD algorithm was also eliminated using the present method.
Starting Page	554
Ending Page	565
Page Count	12
ISSN	17519675
Volume Number	11
e-ISSN	17519683
Issue Number	Issue 5, Jul (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/11/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2016.0619
Journal	IET Signal Processing
Publisher Date	2017-02-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	C-IFDD-WAD Algorithm Spectrum Characteristic Analysis Cascaded Interpolation-filter-delay-decimation Algorithm Without Additional Delay Communication Field Computational Complexity Delayed Signal Detection Field Filtering Method in Signal Processing Filtering Theory Fixed Additional Delay Interpolation Interpolation And Function Approximation Interpolation Factor Numerical Analysis Signal Processing Application Signal Processing Theory Time Delay
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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