Title :
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
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;
Conference_Titel :
Wireless Communications and Networking Conference, 2005 IEEE
Print_ISBN :
0-7803-8966-2
DOI :
10.1109/WCNC.2005.1424619
