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MC-CDMA系统中基于子空间的半盲信道估计

李子 蔡跃明

李子, 蔡跃明. MC-CDMA系统中基于子空间的半盲信道估计[J]. 电子与信息学报, 2007, 29(8): 1906-1910. doi: 10.3724/SP.J.1146.2005.01691
引用本文: 李子, 蔡跃明. MC-CDMA系统中基于子空间的半盲信道估计[J]. 电子与信息学报, 2007, 29(8): 1906-1910. doi: 10.3724/SP.J.1146.2005.01691
Li Zi, Cai Yue-ming . Subspace-based Semiblind Channel Estimation in MC-CDMA Systems[J]. Journal of Electronics & Information Technology, 2007, 29(8): 1906-1910. doi: 10.3724/SP.J.1146.2005.01691
Citation: Li Zi, Cai Yue-ming . Subspace-based Semiblind Channel Estimation in MC-CDMA Systems[J]. Journal of Electronics & Information Technology, 2007, 29(8): 1906-1910. doi: 10.3724/SP.J.1146.2005.01691

MC-CDMA系统中基于子空间的半盲信道估计

doi: 10.3724/SP.J.1146.2005.01691
基金项目: 

江苏省自然科学基金(BK2006002)和东南大学移动通信国家重点实验室开放研究基金(N200601)资助课题

Subspace-based Semiblind Channel Estimation in MC-CDMA Systems

  • 摘要: 该文提出了MC-CDMA系统中一种基于子空间的半盲信道估计方法。该方法结合MC-CDMA系统信号模型的特点,通过初始信道估计来解决收敛速度慢的问题;通过部分用户的导频符号以及预均衡技术来估计模糊因子;通过迭代算法来降低计算复杂度。这些措施使得半盲信道估计方法的实用化成为可能。计算机仿真验证了该方法的有效性。
  • Hara S and Prasad R. Overview of multicarrier CDMA. IEEE Communications Magazine, 1997, 35(12): 126-133.[2]Rappaport T S. Wireless Communications: Principles and Practice. Upper Saddle River, New Jersey, USA: Prentice- Hall, 1996, Chapter 1-3.[3]Choi J. Channel estimation for coherent multi-carrier CDMA systems over fast fading channels. IEEE Vehicular Technology Conference, Tokyo, Japan, May 2000, vol. 1: 400-404.[4]Tureli U, Kivanc D, and Liu H. Channel estimation for multicarrier CDMA. IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Istanbul, Turkey, June 2000, vol. 5: 2909-2912.[5]Escudero C J, Iglesia D I, and Casteda L. A novel channel identification method for downlink multicarrier CDMA systems. IEEE Personal Indoor and Mobile Radio Communications (PIMRC), Yokohama, Japan, September 1993: 103-107.[6]Escudero C J, Iglesia D I, and Bugallo M F, et al.. Analysis of a subspace channel estimation technique for multicarrier cdma systems. IEEE Signal Processing Workshop on Statistical Signal and Array Processing, Pennsylvania-USA, August 14-16, 2000: 184-188.[7]Tong L, Sadler B M, and Dong M. Pilot assisted wireless transmissions: General model, design criteria, and signal processing[J].IEEE Signal Processing Magazine.2004, 21(6):12-25[8]Doukopoulos X G and Moustakides G V. Blind channel estimation for downlink CDMA systems. IEEE International Conference on Communications, Alaska, Anchorage, May. 2003: 2416-2420.
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出版历程
  • 收稿日期:  2005-12-28
  • 修回日期:  2006-07-10
  • 刊出日期:  2007-08-19

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