The effect of spreading factor in MC-CDMA systems under multi-cell environments in correlated fading channels

Author

Koo, Jayong ; Han, Youngnam

Author_Institution

Inf. & Commun. Univ., South Korea

Volume

7

fYear

2004

fDate

26-29 Sept. 2004

Firstpage

4983

Abstract

In MC-CDMA systems, since a signal is spread and combined in the frequency domain, one of the main interests is to decide a spreading factor (SF) for optimal system configuration. We investigate the effect of SF on the link quality of coded systems under multi-cell environments. Also, we discuss the effects of radio link conditions, such as delay spreads and system load. We make an analytical derivation on multiple user interference (MUI) and other cell interference (OCI) power at arbitrary load, verified by simulation. It is revealed that OFDMA outperforms MC-CDMA with spreading under considerable load and a practical channel coder.

Keywords

OFDM modulation; code division multiple access; delays; fading channels; frequency division multiple access; radiofrequency interference; MC-CDMA systems; OFDM; OFDMA; correlated fading channels; delay spread; link quality; multi-cell environments; multiple user interference; other cell interference; radio link conditions; spreading factor; system load; Analytical models; Delay effects; Delay systems; Fading; Frequency domain analysis; Interchannel interference; Intersymbol interference; Multicarrier code division multiple access; OFDM; Radio link;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th

ISSN

1090-3038

Print_ISBN

0-7803-8521-7

Type

conf

DOI

10.1109/VETECF.2004.1405046

Filename

1405046