Combination of LMMSE equalization and multi-path interference cancellation in WCDMA receivers

Author

Gao, Zhan ; Wu, Qihm ; Wang, Jinlong

Author_Institution

Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., China

fYear

2004

fDate

18-21 Aug. 2004

Firstpage

838

Lastpage

841

Abstract

High-speed packet transmission is an important characteristic in the 3rd generation mobile communication system. In order to enhance the performance of the high-speed packet transmission in low spreading factor, a new WCDMA receiver of chip equalizer (LMMSE-MPIC) is presented in this paper, which combines the linear chip equalizer with nonlinear multi-path interference cancellation together. The algorithm (PC-LMMSE) is proposed based on pilot cancellation. Theoretic analysis and computer simulations show that LMMSE-MPIC is superior to conventional Rake and LMMSE equalizer and effectively improves the performance of the WCDMA system in low spreading factor.

Keywords

3G mobile communication; code division multiple access; equalisers; interference suppression; least mean squares methods; radio receivers; 3G mobile communication; LMMSE equalization; LMMSE-MPIC; Rake; WCDMA receivers; chip equalizer; computer simulations; high-speed packet transmission; multi-path interference cancellation; pilot cancellation; spreading factor; Channel estimation; Character generation; Convolution; Downlink; Equalizers; Interference cancellation; Mobile communication; Multiaccess communication; Performance analysis; RAKE receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2004. ICMMT 4th International Conference on, Proceedings

Print_ISBN

0-7803-8401-6

Type

conf

DOI

10.1109/ICMMT.2004.1411660

Filename

1411660