Performance enhancement of MC-CDMA system through turbo multi-user detection

Author

Rasadurai, K. ; Kumaratharan, N.

Author_Institution

Dept. of Inf. Technol., Sri Venkateswara Coll. of Eng., Sriperumbudur, India

fYear

2012

fDate

10-12 Jan. 2012

Firstpage

1

Lastpage

7

Abstract

In this paper turbo multi-user detection (MUD) technique is proposed for multi carrier code division multiple access (MC-CDMA) system to overcome the affects of multiple access interference (MAI) caused by the inter-cell and intra-cell interference and near far effect. The proposed technique estimates the interference from the unknown users and the interference estimate is subtracted from the received signal. Simulation results show that the turbo multi user detector significantly outperforms the conventional multi user detector for moderate and high signal-to-noise ratios.

Keywords

code division multiple access; intercarrier interference; interference suppression; multiuser detection; turbo codes; MC-CDMA system; intercell interference; interference estimation; intracell interference; multicarrier code division multiple access; multiple access interference; near far effect; performance enhancement; signal to noise ratio; turbo multiuser detection; Decoding; Detectors; Interference; Multicarrier code division multiple access; Multiuser detection; Turbo codes; MAI; MAP; MC-CDMA; MMSE; MUD; SOVA;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Communication and Informatics (ICCCI), 2012 International Conference on

Conference_Location

Coimbatore

Print_ISBN

978-1-4577-1580-8

Type

conf

DOI

10.1109/ICCCI.2012.6158848

Filename

6158848