IMPROVED ITERATIVE PARALLEL INTERFERENCE CANCELLATION FOR WIRELESS DS-CDMA COMMUNICATION SYSTEMS

This paper presents a Turbo Multiuser Detector for Turbo-Coded DS-CDMA wireless communication systems. The receiver is based on the utilization of a PIC and a bank of turbo decoders: particularly, the PIC performs interference cancellation after each decoding iterations of constituent decoder. A new enhanced estimator of the signal-to-noise-plus-interference-ratio is used in the decision device and in the MAP decoding algorithm. By means of computer simulations, we will show that the proposed receiver ouperforms other similar schemes for medium to very high system loads, in AWGN and multipath fading channel