Results 181 to 190 of about 5,600 (224)
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IEEE Signal Processing Magazine, 2004
Communication channels that involve both error-control coding and multiple-access signaling are of increasing interest in applications such as cellular telephony, wireless computer networks, and broadband local access. Optimal data detection and decoding in such channels generally require a level of computational complexity that is prohibitive for ...
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Communication channels that involve both error-control coding and multiple-access signaling are of increasing interest in applications such as cellular telephony, wireless computer networks, and broadband local access. Optimal data detection and decoding in such channels generally require a level of computational complexity that is prohibitive for ...
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Turbo greedy multiuser detection
IEEE Journal on Selected Areas in Communications, 2001Previously, a novel scheme for iterative multiuser detection and turbo decoding was proposed by Damnjanovic and Vojcic (2000, 2001). In this scheme, multiuser detection and single-user turbo decoding are tightly coupled to maximize the overall gain.
Amina AlRustamani +2 more
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Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94), 1995
An important thrust in research in multiuser detection is the design of adaptive detectors, which self-tune the detector parameters from the observation of the received waveform. The literature on this subject is surveyed in this tutorial paper.
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An important thrust in research in multiuser detection is the design of adaptive detectors, which self-tune the detector parameters from the observation of the received waveform. The literature on this subject is surveyed in this tutorial paper.
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Energy efficiency of multiuser detection
WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466), 2003We study the power consumption of several multiuser detectors in the power controlled DS-CDMA system. The matched-filter detector, linear MMSE detector, successive interference cancellation (SIC), and LMMSE-SIC are considered. Closed form analysis and numerical results show that by using a multiuser detector, system power consumption can significantly ...
Wei Luo, Anthony Ephremides
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Precoded opportunistic multiuser detection
2012 IEEE International Conference on Communication Systems (ICCS), 2012In this paper, we study multi-user multi-input-multi-output (MU-MIMO) wireless system for spectrum sharing over a limited bandwidth, in which transmit covariance matrices of the coexisting users independently updated in an iterative manner for individual rate maximization.
Nirul Kumar, Aditya Trivedi
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Multiuser detection in impulsive channels
Annales Des Télécommunications, 1999L’article etudie la detection de donnees dans les systemes d’acces multiple par repartition en code utilisant la methode de sequence directe, en presence de bruit ambiant non gaussien. Ce probleme intervient dans des situations pratiques puisque de nombreux canaux physiques sur lesquels on emploie des communications a acces multiple sont notoirement ...
POOR H. V., TANDA, MARIO
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Conference Record of Thirty-Second Asilomar Conference on Signals, Systems and Computers (Cat. No.98CH36284), 2002
An iterative receiver structure is proposed for decoding multiuser information data in a convolutionally coded DS-CDMA system. The receiver performs two successive soft-output decisions, achieved by a soft-input soft-output (SISO) multiuser detector and a bank of single-user SISO channel decoders, through an iterative process.
null Xiaodong Wang, H.V. Poor
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An iterative receiver structure is proposed for decoding multiuser information data in a convolutionally coded DS-CDMA system. The receiver performs two successive soft-output decisions, achieved by a soft-input soft-output (SISO) multiuser detector and a bank of single-user SISO channel decoders, through an iterative process.
null Xiaodong Wang, H.V. Poor
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Crosstalk profile detection for use in multiuser detection
ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240), 2002Accurate identification of crosstalk interferers can increase throughput by proper loading or multiuser detection. In some systems, such as cable based delivery systems, crosstalk channel characteristics are finite and static. Furthermore, the type of service on each line does not change.
Atul Salvekar +3 more
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Distributed multiuser detection
Conference Record of the Thirty-Third Asilomar Conference on Signals, Systems, and Computers (Cat. No.CH37020), 2003Multiuser detection is extended to distributed scenarios. Each cooperating receiver makes preliminary decisions on the received bits of multiple users based on its own observations. Then the preliminary decisions are combined at the fusion center to produce the final decision.
R.S. Blum, null Jun Hu
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A new approach to greedy multiuser detection
IEEE Transactions on Communications, 2002We propose a new suboptimum multiuser detector for synchronous and asynchronous multiuser communications. In this approach, a greedy strategy is used to maximize the cost function, the maximum-likelihood (ML) metric. The coefficients of the ML metric are utilized as weights indicating in which order bits can be estimated.
Amina AlRustamani, Branimir R. Vojcic
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