The sensitivity of downlink MC-DS-CDMA to carrier frequency offsets

Author

Steendam, Heidi ; Moeneclaey, Marc E.

Author_Institution

Dept. of Telecommun. & Inf. Process., Ghent Univ., Belgium

Volume

5

Issue

5

fYear

2001

fDate

5/1/2001 12:00:00 AM

Firstpage

215

Lastpage

217

Abstract

We investigate the sensitivity of a downlink MC-DS-CDMA system to carrier frequency offsets. It is shown that the resulting interference power depends only on the ratio of the frequency offset to the carrier spacing. Hence, for given a frequency offset and system bandwidth, the MC-DS-CDMA performance degradation is independent of the spreading factor but increases with the number of carriers; equivalently, for given frequency offset and symbol rate, the performance degradation increases with the ratio of the number of carriers to the spreading factor.

Keywords

code division multiple access; land mobile radio; multiuser channels; radio links; radiofrequency interference; spread spectrum communication; carrier frequency offsets; downlink MC-DS-CDMA; frequency offset to carrier spacing ratio; interference power; mobile radio; multicarrier direct-sequence CDMA; performance degradation; spreading factor; symbol rate; system bandwidth; Bandwidth; Degradation; Downlink; Frequency; Interference; Land mobile radio; Multiaccess communication; Multicarrier code division multiple access; Oscillators; Radio transmitters;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.922764

Filename

922764