SIC and PIC multiuser detection for prefix-assisted DS-CDMA systems
Paulo Silva, Rui Dinis · Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) · 2005
In this paper we present iterative frequency-domain mul-tiuser detection (MUD) receivers for the uplink transmis-sion of direct sequence code division multiple access sys-tems (DS-CDMA) that combine iterative block decision feedback equalization (IB-DFE) principles with interfer-ence cancelation techniques. Both successive interfer-ence cancelation (SIC) and parallel interference cancela-tion (PIC) structures are considered. Our performance re-sults show that the proposed receiver structures have excel-lent bit error rate (BER) performances, that can be close to the single-user matched filter bound (MFB), even for fully loaded systems and severely time-dispersive channels1.