Study of Joint Soft Parallel Interference Cancellation and Turbo Decoder Method in Multicode CDMA System
Wenjiang Hu · Journal of Xi'an University of Technology · 2004
A joint soft partial parallel interference cancellation (SP-PIC) and turbo channel decoder method for multicode CDMA system is proposed in this paper. Received signal is firstly equalized by the LMMSE chip equalizer, and then multicode cdma interference (MCI) is reconstructed by using soft information from data symbol after turbo decoder. Parallel interference cancellation (PIC) is adopted to multicode interference (MCI) at the end. Simulation results show that the error floor of the multicode CDMA system can be reduced significantly.