Joint parallel interference cancellation and iterative channel estimation method in multicode CDMA system
Junhui Zhao · Journal of Circuits and Systems · 2004
A joint parallel interference cancellation (PIC) and iterative channel estimation method for multicode CDMA system is proposed. Channel parameters are firstly estimated with the aid of pilot symbols, and then is refined by using soft information from data symbol after rake receiver. Parallel interference cancellation (PIC) is adopted to eliminate multicode interference (MCI). Simulation Results show that the error floor of the system can be reduced significantly. The effects of different parameter on the bit error ratio (BER) performance of the multicode CDMA, such as the quality of channel estimation, PIC cancellation factor and the number of cancellation, are also investigated.