Title :
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
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;
Conference_Titel :
Computer Communication and Informatics (ICCCI), 2012 International Conference on
Conference_Location :
Coimbatore
Print_ISBN :
978-1-4577-1580-8
DOI :
10.1109/ICCCI.2012.6158848
