On the performance of multicarrier RAKE systems

Author

Xu, Weiping ; Milstein, Laurence B.

Author_Institution

Nokia Mobile Phones Inc., San Diego, CA, USA

Volume

49

Issue

10

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

1812

Lastpage

1823

Abstract

In this paper, we integrate the multicarrier signaling technique and the RAKE receiver to design a DS-CDMA system with the capability to increase the data rate, mitigate the effect of correlation among the various subcarriers, and suppress partial-band interference. In the proposed system, a data sequence is serial-to-parallel converted, and multicarrier DS-CDMA is used on each of the parallel data streams. The receiver provides a RAKE for each subcarrier, and the outputs of the RAKEs are combined by a maximal-ratio combiner. We employ a correlated subcarrier and frequency-selective fading channel model to derive the average probability of error of the system and compare the results with those of both a single carrier RAKE system and a multicarrier DS-CDMA system in a frequency selective Rayleigh fading channel with an exponential multipath intensity profile, when multiple access interference and partial-band interference are present

Keywords

Rayleigh channels; code division multiple access; error statistics; fading channels; interference suppression; multipath channels; radio receivers; spread spectrum communication; telecommunication signalling; DS-CDMA system; RAKE receiver; Rayleigh fading channel; average probability of error; correlated subcarrier; data rate increase; exponential multipath intensity profile; frequency-selective fading channel model; maximal-ratio combiner; multicarrier signaling technique; multiple access interference; parallel data streams; partial-band interference suppression; Bandwidth; Fading; Frequency diversity; Interference suppression; Multiaccess communication; Multipath channels; RAKE receivers; Rayleigh channels; Signal design; Wideband;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.957403

Filename

957403