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

doi:10.1109/ICC.2007.810

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

Department of Engineering Science

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	2007 IEEE International Conference on Communications, ICC'07
Pages	4907-4912
Number of pages	6
DOIs	https://doi.org/10.1109/ICC.2007.810
Publication status	Published - 2007
Event	2007 IEEE International Conference on Communications, ICC'07 - Glasgow, Scotland, United Kingdom Duration: 2007 Jun 24 → 2007 Jun 28

Publication series

Name	IEEE International Conference on Communications
ISSN (Print)	0536-1486

Other

Other	2007 IEEE International Conference on Communications, ICC'07
Country/Territory	United Kingdom
City	Glasgow, Scotland
Period	07-06-24 → 07-06-28

All Science Journal Classification (ASJC) codes

Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.1109/ICC.2007.810

Cite this

@inproceedings{d21c647bb2da450ea25ed2eb57c691d0,

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

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.",

author = "Tianqi Wang and Cheng Li and Chen, {Hsiao Hwa}",

year = "2007",

doi = "10.1109/ICC.2007.810",

language = "English",

isbn = "1424403537",

series = "IEEE International Conference on Communications",

pages = "4907--4912",

booktitle = "2007 IEEE International Conference on Communications, ICC'07",

note = "2007 IEEE International Conference on Communications, ICC'07 ; Conference date: 24-06-2007 Through 28-06-2007",

}

Wang, T, Li, C & Chen, HH 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 proceeding › Conference contribution

TY - GEN

T1 - Basis expansion model and doppler diversity techniques for frequency domain channel estimation and equalization in DS-CDMA systems

AU - Wang, Tianqi

AU - Li, Cheng

AU - Chen, Hsiao Hwa

PY - 2007

Y1 - 2007

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.

UR - http://www.scopus.com/inward/record.url?scp=38549130858&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38549130858&partnerID=8YFLogxK

U2 - 10.1109/ICC.2007.810

DO - 10.1109/ICC.2007.810

M3 - Conference contribution

AN - SCOPUS:38549130858

SN - 1424403537

SN - 9781424403530

T3 - IEEE International Conference on Communications

SP - 4907

EP - 4912

BT - 2007 IEEE International Conference on Communications, ICC'07

T2 - 2007 IEEE International Conference on Communications, ICC'07

Y2 - 24 June 2007 through 28 June 2007

ER -

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

Abstract

Publication series

Other

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this