Results 161 to 170 of about 2,797,595 (206)
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Multiuser detection of alamouti signals
IEEE Transactions on Communications, 2009In a MIMO multiple-access channel where users employ Space-Time Block Codes (STBC), interference cancellation can be used to suppress co-channel interference and recover the desired signal of each user at the receiver. Leveraging the special properties of Alamouti matrices, we first show that spatial multiplexing of Alamouti signals retains the space ...
Chee Wei Tan 0001, A. Robert Calderbank
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Blind adaptive multiuser detection
GLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005We propose a new blind multiuser signal model and detection framework for solving the near-far problem in synchronous CDMA in this paper. Compared with existing blind detectors, the proposed framework requires a minimum number of previously received signals, which is about the number of interfering users, and no sub-space separation or sequence ...
Shu Wang +7 more
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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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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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Blind multiuser detection: a subspace approach
IEEE Transactions on Information Theory, 1998Summary: A new multiuser detection scheme based on signal subspace estimation is proposed. It is shown that under this scheme, both the decorrelating detector and the linear minimum mean-square-error (MMSE) detector can be obtained blindly, i.e., they can be estimated from the received signal with the prior knowledge of only the signature waveform and ...
H V Poor
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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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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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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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