Title :
Interference Cancellation Based DFT-Precoded CDMA for Hybrid OFCDMA Multiple Access
Author :
Nagaraj, Shirish ; Monogioudis, Pantelis
Author_Institution :
Motorola Inc., Arlington
Abstract :
A novel hybrid OFDMA/CDMA multiple access system for uplink communications in evolving 4G wireless systems is developed. Specifically, a DFT-precoded CDMA technique is proposed for the CDMA part of the multiple access. We elaborate on different configurations of precoded CDMA operation, and develop advanced receiver techniques, using frequency-domain interference cancellation. Detailed simulation results showing the performance of this multiple access approach is presented. Finally, we describe how the proposed approach has been incorporated in the currently developing Ultra Mobile Broadband (UMB) system, which is an evolution from the cdma2000 evolution standards family.
Keywords :
4G mobile communication; code division multiple access; precoding; DFT-precoded CDMA; OFCDMA multiple access; UMB system; frequency-domain interference cancellation; ultra mobile broadband system; uplink communications; Delay; Downlink; Frequency domain analysis; Interference cancellation; Multiaccess communication; OFDM modulation; Power control; Silicon carbide; Standards development; Wireless communication;
Conference_Titel :
Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-1042-2
Electronic_ISBN :
978-1-4244-1043-9
DOI :
10.1109/GLOCOM.2007.727
