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In mobile multiple-access communications, not only the location of active users, but also their number varies with time. In typical analysis, multiuser detection theory has been developed under the assumption that the number of active users is constant and known at the receiver, which coincides with the maximum number of users entitled to access the system. This assumption is often overly pessimistic,...
This paper deals with the design of a multicarrier multiple-input multiple-output system which performs nonlinear Tomlinson-Harashima precoding at the transmitter and linear equalization at the receiver. The goal is the joint optimization of the processing matrices at both ends of the wireless link, assuming a constraint on the overall transmit power. We consider different design criteria which require...
In this paper we present a new method of compensating for complex multipath channel fading in blind multiuser detection for DS-CDMA communication. This compensation allows for the use of different chip pulse shapes. The compensation is based on the incorporation of priors derived from the FFT of the pulse shape. The system employs detectors that incorporate methods of independent component analysis...
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