Hardware implementation aspects of a detector based on successive interference cancellation in a DS/CDMA system

Abstract

To combat interference between users in a DS/CDMA system, several multi-user detection schemes have been proposed. This paper presents a prestudy for a custom DSP implementation of a multi-user detector scheme based on non-decision directed interference cancellation. Two architectural implementation methods for asynchronous detection are suggested and mutually compared. Each of the architectures is shown to have its particular advantages and therefore, a design combining the methods described in this paper is worth future studies.