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

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

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.

原文English
主出版物標題2007 IEEE International Conference on Communications, ICC'07
頁面4907-4912
頁數6
DOIs
出版狀態Published - 2007 十二月 1
事件2007 IEEE International Conference on Communications, ICC'07 - Glasgow, Scotland, United Kingdom
持續時間: 2007 六月 242007 六月 28

出版系列

名字IEEE International Conference on Communications
ISSN(列印)0536-1486

Other

Other2007 IEEE International Conference on Communications, ICC'07
國家/地區United Kingdom
城市Glasgow, Scotland
期間07-06-2407-06-28

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信
  • 電氣與電子工程

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