Blind channel estimation for MC-CDMA with time offset

Author

Wu, Haifeng ; Dai, Xianhua ; Liang, Jianqing

Author_Institution

Dept. of Electron. & Commun. Eng., Sun Yat-sen Univ., Guangzhou, China

fYear

2005

fDate

13-16 Dec. 2005

Firstpage

493

Lastpage

496

Abstract

This paper proposes a new blind channel estimation scheme for the uplink of asynchronous MC-CDMA systems. Most of existing channel estimations, which are assumed to work in perfectly synchronization cannot be extended to the asynchronous system with time offset (TO). Our new scheme, however, can work for not only perfectly synchronized MC-CDMA system but also the asynchronous system with TO. Besides, this blind channel estimation can attain the optimal estimation in minimum mean square error (MMSE) sense by appropriately designing spreading codes, and show an improved performance in simulation.

Keywords

channel estimation; code division multiple access; least mean squares methods; radio links; synchronisation; asynchronous MC-CDMA systems; blind channel estimation; minimum mean square error; synchronization; time offset; Blind equalizers; Channel estimation; Frequency synchronization; Information science; Interference; Multiaccess communication; Multicarrier code division multiple access; OFDM; Sun; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems, 2005. ISPACS 2005. Proceedings of 2005 International Symposium on

Print_ISBN

0-7803-9266-3

Type

conf

DOI

10.1109/ISPACS.2005.1595454

Filename

1595454