Time-varying Signature Vectors Estimation for Multicarrier CDMA Systems

Author

Zhang, Yiwen ; Yin, Qinye ; Ding, Le

Author_Institution

Institute of Information Engineering, School of Electronics and Information Engineering, Xi´´an Jiaotong University, Xi´´an Shaanxi 710049, P. R. China. Email: zeven@mail.edu.cn

Volume

7

fYear

2006

fDate

38869

Firstpage

3305

Lastpage

3309

Abstract

In this paper, a blind adaptive signature vectors estimation algorithm for Multicarrier (MC) CDMA system in rapidly time-varying multipath fading channel is proposed. This algorithm adopts PROTEUS algorithm to estimate signal subspace and is an adaptive low dimension implementation of subspace projection method in virtue of the special update form of PROTEUS algorithm. In the case that multiple antennas are deployed to increase the capacity of CDMA systems, the proposed algorithm can estimate time-varying spatial-temporal signature vectors. This method has low computational complexity and good real-time tracking capability for rapidly time-varying channel. Monte-Carlo simulations results demonstrate the estimation and convergence performance of the proposed algorithm.

Keywords

Base stations; Bit error rate; Channel estimation; Computational complexity; Intersymbol interference; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Time varying systems; Time-varying channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2006. ICC '06. IEEE International Conference on

Conference_Location

Istanbul

ISSN

8164-9547

Print_ISBN

1-4244-0355-3

Electronic_ISBN

8164-9547

Type

conf

DOI

10.1109/ICC.2006.255226

Filename

4024699