Effects of carrier tracking in RAKE reception of wide-band DSSS in Rician fading

Author

Ziemer, Rodger E. ; Vojcic, Branimir R. ; Milstein, Laurence B. ; Proakis, John G.

Author_Institution

Dept. of Electr. & Comput. Eng., Colorado Univ., Colorado Springs, CO, USA

Volume

47

Issue

6

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

681

Lastpage

686

Abstract

An analysis is given of the effect of phase tracking error in the fingers of a coherent RAKE receiver. Results for constant and exponentially decaying power delay profiles indicate that, for sufficiently low tracking loop signal-to-noise ratio, a point is eventually reached where performance does not improve with the use of an increased number of fingers. This suggests that the expected performance improvement due to finer multipath resolution in the very wideband personal communications systems anticipated for third generation will be negated by parameter estimation error unless special care is taken to minimize these errors, such as jointly optimum detection and estimation procedures

Keywords

Rician channels; multipath channels; parameter estimation; personal communication networks; radio receivers; spread spectrum communication; RAKE reception; Rician fading; carrier tracking; jointly optimum detection/estimation; multipath resolution; parameter estimation error; phase tracking error; power delay profiles; tracking loop signal-to-noise ratio; wide-band DSSS; wideband personal communications systems; Delay; Fading; Fingers; Multipath channels; Parameter estimation; Signal resolution; Signal to noise ratio; Spread spectrum communication; Tracking loops; Wideband;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.769335

Filename

769335