Derivation of a new analysis tool to compute the performance of non-linear multistage interference cancellation detectors

In this paper, the performance of non-linear Interference Cancellation (IC) techniques for centralized receivers of asynchronous direct-sequence code-division multiple-access (DS/CDMA) systems in frequency-selective Rayleigh fading channels is studied. A detailed theoretical framework is presented to analyze the bit-error-rate (BER) of interference cancellation where we focus on multistage successive and parallel IC techniques. New BER expressions are derived based on the analysis tool known as 'Unified Analysis', which enables us to incorporate receiver design quality (i.e., channel estimation errors) and system parameters which characterize a CDMA network (i.e., cell density, data rates and different power control loop failures).