Title :
Analysis of performance degradation due to channel estimation error in pre-Rake TDD/CDMA
Author :
Harum, N. ; Tamura, Yuh ; Jarot, Sigit P W ; Esmailzadeh, Riaz ; Nakagawa, Masao
Author_Institution :
Dept. of Inf. & Comput. Sci., Keio Univ., Kanagawa, Japan
Abstract :
In recent years, pre-Rake combining technique has become a hot topic of research as it decreases the complexity of the portable mobile unit, while achieving the same multipath diversity effect of the Rake receiver. In practice, the error in channel estimation in pre-Rake system occurs due to time variability in mobile radio channel. In this paper, we present pre-Rake performance under imperfect channel estimation due to time variability in TDD system, depending on Doppler frequency and compare it with the ideal pre-Rake system.
Keywords :
channel estimation; code division multiple access; diversity reception; mobile radio; multipath channels; radio receivers; spread spectrum communication; time division multiplexing; CDMA system; Doppler frequency; Rake receiver; TDD system; channel estimation; channel estimation error; mobile radio channel; multipath diversity effect; portable mobile unit; time variability; Channel estimation; Computer errors; Degradation; Diversity reception; Fading; Land mobile radio; Mobile communication; Multiaccess communication; Multipath channels; Performance analysis;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on
Print_ISBN :
0-7803-7822-9
DOI :
10.1109/PIMRC.2003.1264408
