Advanced search
2 files | 3.02 MB

Maximally Flat and Least-Square Co-Design of Variable Fractional Delay Filters for Wideband Software-Defined Radio

Haolin Li (UGent) , Joris Van Kerrebrouck (UGent) , Johan Bauwelinck (UGent) , Piet Demeester (UGent) and Guy Torfs (UGent)
Author
Organization
Project
ATTO (A new concept for ultra-high capacity wireless networks)
Abstract
This paper describes improvements in a Farrow-structured variable fractional delay (FD) Lagrange filter for all-pass FD interpolation. The main idea is to integrate the truncated sinc into the Farrow structure of a Lagrange filter, in order that a superior FD approximation in the least-square sense can be achieved. Its primary advantages are the lower level of mean-square-error (MSE) over the whole FD range and the reduced implementation cost. Extra design parameters are introduced for making the trade-off between MSE and maximal flatness under different design requirements. Design examples are included, illustrating an MSE reduction of 50% compared to a classical Farrow-structured Lagrange interpolator while the implementation cost is reduced. This improved variable FD interpolation system is suitable for many applications, such as sample rate conversion, digital beamforming and timing synchronization in wideband software-defined radio (SDR) communications.
Keywords
FIR FILTERS, EFFICIENT IMPLEMENTATION, FARROW STRUCTURE, INTERPOLATION, Canonical signed digit (CSD), Farrow structure (FS), FPGA, fractional, delay (FD), Lagrange, least-square (LS), mean-square-error (MSE)

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.77 MB
  • 7217 i.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 1.25 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Li, Haolin, Joris Van Kerrebrouck, Johan Bauwelinck, Piet Demeester, and Guy Torfs. 2019. “Maximally Flat and Least-Square Co-Design of Variable Fractional Delay Filters for Wideband Software-Defined Radio.” Journal of Circuits Systems and Computers 28 (1): 1–20.
APA
Li, Haolin, Van Kerrebrouck, J., Bauwelinck, J., Demeester, P., & Torfs, G. (2019). Maximally Flat and Least-Square Co-Design of Variable Fractional Delay Filters for Wideband Software-Defined Radio. JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS, 28(1), 1–20.
Vancouver
1.
Li H, Van Kerrebrouck J, Bauwelinck J, Demeester P, Torfs G. Maximally Flat and Least-Square Co-Design of Variable Fractional Delay Filters for Wideband Software-Defined Radio. JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS. Singapore: World Scientific Publ Co Pte Ltd; 2019;28(1):1–20.
MLA
Li, Haolin, Joris Van Kerrebrouck, Johan Bauwelinck, et al. “Maximally Flat and Least-Square Co-Design of Variable Fractional Delay Filters for Wideband Software-Defined Radio.” JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS 28.1 (2019): 1–20. Print.
@article{8580159,
  abstract     = {This paper describes improvements in a Farrow-structured variable fractional delay (FD) Lagrange filter for all-pass FD interpolation. The main idea is to integrate the truncated sinc into the Farrow structure of a Lagrange filter, in order that a superior FD approximation in the least-square sense can be achieved. Its primary advantages are the lower level of mean-square-error (MSE) over the whole FD range and the reduced implementation cost. Extra design parameters are introduced for making the trade-off between MSE and maximal flatness under different design requirements. Design examples are included, illustrating an MSE reduction of 50\% compared to a classical Farrow-structured Lagrange interpolator while the implementation cost is reduced. This improved variable FD interpolation system is suitable for many applications, such as sample rate conversion, digital beamforming and timing synchronization in wideband software-defined radio (SDR) communications.},
  articleno    = {1950006},
  author       = {Li, Haolin and Van Kerrebrouck, Joris and Bauwelinck, Johan and Demeester, Piet and Torfs, Guy},
  issn         = {0218-1266},
  journal      = {JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS},
  keyword      = {FIR FILTERS,EFFICIENT IMPLEMENTATION,FARROW STRUCTURE,INTERPOLATION,Canonical signed digit (CSD),Farrow structure (FS),FPGA,fractional,delay (FD),Lagrange,least-square (LS),mean-square-error (MSE)},
  language     = {eng},
  number       = {1},
  pages        = {1950006:1--1950006:20},
  publisher    = {World Scientific Publ Co Pte Ltd},
  title        = {Maximally Flat and Least-Square Co-Design of Variable Fractional Delay Filters for Wideband Software-Defined Radio},
  url          = {http://dx.doi.org/10.1142/S0218126619500063},
  volume       = {28},
  year         = {2019},
}

Altmetric
View in Altmetric
Web of Science
Times cited: