A constant modulus blind adaptive receiver for multiuser interference suppression
نویسندگان
چکیده
منابع مشابه
A constant modulus blind adaptive receiver for multiuser interference suppression
In this paper we investigate the ability of the Constant Modulus (CM) criterion to adaptively suppress Multiple Access Interference (MAI) in Code Division Multiple Access (CDMA) channels without the need of training sequences. In the absence of noise, we show that the resulting receiver is able to completely remove the MAI. We also show that, for high SNR values, CM receivers perform the same a...
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The performance of the blind multiuser detector for a DSCDMA system with linearly constrained constant modulus (LCCM) criterion is known to highly depend on the exact knowledge of the desired user amplitude; it is usually not available at receiver end. In this paper, we propose a novel LC adaptive CM RLS (LC-ACM-RLS) algorithm to adaptively implement the optimal solution of the LCCM receiver, a...
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This letter presents a linearly constrained constant modulus approach for the blind suppression of multiuser interferences in direct-sequence code division multiple access systems. The method performs the same as minimum mean square error receivers and outperforms existing blind approaches because it only requires a rough estimate of the desired user code and timing.
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This work presents blind constrained constant modulus (CCM) adaptive algorithms based on the set-membership filtering (SMF) concept and incorporates dynamic bounds for interference suppression applications. We develop stochastic gradient and recursive least squares type algorithms based on the CCM design criterion in accordance with the specifications of the SMF concept. We also propose a blind...
متن کاملA modified constrained constant modulus approach to blind adaptive multiuser detection
An alternative blind adaptive multiuser detection is investigated based on modified constrained constant modulus (CM) criterion. It has been shown that the performance of a CM-based receiver is limited by the received power of the desired user. In this paper, we show that the limitation can be avoided using noncanonical constraint CM criterion and that in the presence of channel noise the modif...
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ژورنال
عنوان ژورنال: Signal Processing
سال: 1998
ISSN: 0165-1684
DOI: 10.1016/s0165-1684(98)00131-5