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In this paper, we consider the problem of blind robust multiuser detection in a synchronous Chaotic CDMA system in which analog chaotic sequences are used for bandwidth spreading. We propose a new influence function based M-estimator for the problem of blind data detection in the presence of non-Gaussian noise which is modelled as a Gaussian mixture. Computer simulations show that the proposed detector...
In this paper, we address the problem of improved robust CDMA signal detection in asynchronous non Gaussian flat-fading channels. Since the performance of robust multiuser detector depends on the selection of M-estimator and the spreading sequences, the new influence function proposed in with spatio-temporal chaotic spreading is considered to develop a new better performing robust detector for the...
Robust multiuser detection is known in the literature for suppression of multi access interference (MAI) and impulse noise in CDMA communications. However, the performance of the robust multiuser detector depends on the selection of M-estimator and the spreading sequence. Thus, the detector proposed in (Wang and Poor, 1999) with Huber estimator and PN sequence such as gold sequence spreading may not...
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