Performance of Rake-MMSE-equalizer for UWB communications

Author

Eslami, Mohsen ; Dong, Xiaodai

Author_Institution

Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada

Volume

2

fYear

2005

fDate

13-17 March 2005

Firstpage

855

Abstract

The performance of a joint Rake and minimum mean square error (MMSE) equalizer receiver for high data rate ultra-wideband communications is studied in this paper. The proposed receiver combats intersymbol interference by taking advantage of the Rake and equalizer structure. The receiver performance is investigated using a semi-analytical approach and Monte-Carlo simulations. The effects of the number of Rake fingers and equalizer taps on the error performance are examined. For an MMSE equalizer at low to medium SNR, the number of Rake fingers is the dominant factor to improve system performance. while at high SNR the number of equalizer taps plays a more significant role in reducing error rates. The effect of channel estimation error on the performance of the Rake-MMSE-equalizer is also studied through simulations in this paper.

Keywords

Monte Carlo methods; channel estimation; data communication; equalisers; error statistics; interference suppression; intersymbol interference; least mean squares methods; radio receivers; ultra wideband communication; Monte-Carlo simulations; Rake fingers; Rake-MMSE equalizer receiver; SNR; UWB communications; channel estimation error; equalizer taps; high data rate; intersymbol interference suppression; minimum mean square error; performance; ultra-wideband communications; Channel estimation; Equalizers; Error analysis; Fingers; Intersymbol interference; Mean square error methods; RAKE receivers; System performance; Ultra wideband communication; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2005 IEEE

ISSN

1525-3511

Print_ISBN

0-7803-8966-2

Type

conf

DOI

10.1109/WCNC.2005.1424619

Filename

1424619