Basis expansion model and doppler diversity techniques for frequency domain channel estimation and equalization in DS-CDMA systems

Tianqi Wang, Cheng Li, Hsiao-Hwa Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, we propose a frequency domain adaptive estimation of Doppler shifts for multiple Doppler subpaths in direct sequence code division multiple access (DS-CDMA) systems. By modeling the doubly selective channel using a basis expansion model (BEM), the proposed Expectation-Maximization (EM) algorithm-based estimation method can obtain accurate information of Doppler shifts. Based on the estimated information of Doppler shifts, a FDE-based receiver architecture is developed to exploit Doppler diversity in frequency domain. Simulation results demonstrate that this receiver structure features a low computational complexity while achieving good performance compared with traditional receiver structures in DS-CDMA systems.

Original languageEnglish
Title of host publication2007 IEEE International Conference on Communications, ICC'07
Pages4907-4912
Number of pages6
DOIs
Publication statusPublished - 2007 Dec 1
Event2007 IEEE International Conference on Communications, ICC'07 - Glasgow, Scotland, United Kingdom
Duration: 2007 Jun 242007 Jun 28

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Other

Other2007 IEEE International Conference on Communications, ICC'07
CountryUnited Kingdom
CityGlasgow, Scotland
Period07-06-2407-06-28

Fingerprint

Doppler effect
Channel estimation
Code division multiple access
Computational complexity

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Wang, T., Li, C., & Chen, H-H. (2007). Basis expansion model and doppler diversity techniques for frequency domain channel estimation and equalization in DS-CDMA systems. In 2007 IEEE International Conference on Communications, ICC'07 (pp. 4907-4912). [4289481] (IEEE International Conference on Communications). https://doi.org/10.1109/ICC.2007.810
Wang, Tianqi ; Li, Cheng ; Chen, Hsiao-Hwa. / Basis expansion model and doppler diversity techniques for frequency domain channel estimation and equalization in DS-CDMA systems. 2007 IEEE International Conference on Communications, ICC'07. 2007. pp. 4907-4912 (IEEE International Conference on Communications).
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abstract = "In this paper, we propose a frequency domain adaptive estimation of Doppler shifts for multiple Doppler subpaths in direct sequence code division multiple access (DS-CDMA) systems. By modeling the doubly selective channel using a basis expansion model (BEM), the proposed Expectation-Maximization (EM) algorithm-based estimation method can obtain accurate information of Doppler shifts. Based on the estimated information of Doppler shifts, a FDE-based receiver architecture is developed to exploit Doppler diversity in frequency domain. Simulation results demonstrate that this receiver structure features a low computational complexity while achieving good performance compared with traditional receiver structures in DS-CDMA systems.",
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Wang, T, Li, C & Chen, H-H 2007, Basis expansion model and doppler diversity techniques for frequency domain channel estimation and equalization in DS-CDMA systems. in 2007 IEEE International Conference on Communications, ICC'07., 4289481, IEEE International Conference on Communications, pp. 4907-4912, 2007 IEEE International Conference on Communications, ICC'07, Glasgow, Scotland, United Kingdom, 07-06-24. https://doi.org/10.1109/ICC.2007.810

Basis expansion model and doppler diversity techniques for frequency domain channel estimation and equalization in DS-CDMA systems. / Wang, Tianqi; Li, Cheng; Chen, Hsiao-Hwa.

2007 IEEE International Conference on Communications, ICC'07. 2007. p. 4907-4912 4289481 (IEEE International Conference on Communications).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - In this paper, we propose a frequency domain adaptive estimation of Doppler shifts for multiple Doppler subpaths in direct sequence code division multiple access (DS-CDMA) systems. By modeling the doubly selective channel using a basis expansion model (BEM), the proposed Expectation-Maximization (EM) algorithm-based estimation method can obtain accurate information of Doppler shifts. Based on the estimated information of Doppler shifts, a FDE-based receiver architecture is developed to exploit Doppler diversity in frequency domain. Simulation results demonstrate that this receiver structure features a low computational complexity while achieving good performance compared with traditional receiver structures in DS-CDMA systems.

AB - In this paper, we propose a frequency domain adaptive estimation of Doppler shifts for multiple Doppler subpaths in direct sequence code division multiple access (DS-CDMA) systems. By modeling the doubly selective channel using a basis expansion model (BEM), the proposed Expectation-Maximization (EM) algorithm-based estimation method can obtain accurate information of Doppler shifts. Based on the estimated information of Doppler shifts, a FDE-based receiver architecture is developed to exploit Doppler diversity in frequency domain. Simulation results demonstrate that this receiver structure features a low computational complexity while achieving good performance compared with traditional receiver structures in DS-CDMA systems.

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Wang T, Li C, Chen H-H. Basis expansion model and doppler diversity techniques for frequency domain channel estimation and equalization in DS-CDMA systems. In 2007 IEEE International Conference on Communications, ICC'07. 2007. p. 4907-4912. 4289481. (IEEE International Conference on Communications). https://doi.org/10.1109/ICC.2007.810