Results 191 to 200 of about 4,697,846 (248)
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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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Iterative nonlinear MMSE multiuser detection
1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258), 1999This paper introduces the notion of nonlinear MMSE multiuser detection and shows that MMSE signal estimates followed by single user detectors yield MAP (or minimum probability of error) decisions for CDMA signals. Iterative solutions are proposed for nonlinear MMSE estimation.
Sridhar Gollamudi, Yih-Fang Huang
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Indecomposable error sequences in multiuser detection
IEEE Transactions on Information Theory, 2001Summary: We provide a graph-based characterization of the set of indecomposable sequences that are useful in the computation of an upper bound to error probability of maximum-likelihood detection in code-division multiple-access multiuser systems. We apply this characterization to a \(K\)-user symmetric system and to a two-user two-rate system.
Wei Luo, Anthony Ephremides
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Constrained minimum-BER multiuser detection
IEEE Transactions on Signal Processing, 1999A new linear multiuser detector that directly minimizes the bit-error rate (BER) subject to a set of reasonable constraints is proposed. It is shown that the constrained BER cost function has a unique global minimum. This allows us to develop an efficient Newton barrier method for finding the coefficients of the proposed detector using information ...
Xiaofeng Wang +2 more
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A constrained optimization approach to multiuser detection
IEEE Transactions on Signal Processing, 1997Interference cancellation or multiuser detection schemes are of great interest to the CDMA community because of their potential ability to treat the near-far problem and significantly reduce interference levels. A linear adaptive multiuser detection scheme based on constrained optimization is presented, constraints are constructed from knowledge of ...
Jeffrey B. Schodorf, Douglas B. Williams
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Multiuser Detection Based on Grover's Algorithm
2006 IEEE International Symposium on Circuits and Systems, 2006The classical optimal solution of CDMA multi-user detection is consistent with the optimization of a quadratic function, and to find the optimum is a NP hard problem. Reducing the complexity of optimum based on quantum parallel computation is a new trend of multi-user detection techniques.
Shengmei Zhao, Jia Yao, Baoyu Zheng
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Multimodal and Multiuser Semantic Communications for Channel-Level Information Fusion
IEEE wireless communicationsRecently, semantic communication emerged as one of the enabling technologies for intelligent communications and multimodal information fusion plays an important role therein, where various sensors collect environment information to generate complementary
Xuewen Luo +5 more
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Probability of error in MMSE multiuser detection
IEEE Transactions on Information Theory, 1997Summary: Performance analysis of the minimum-mean-square-error (MMSE) linear multiuser detector is considered in an environment of nonorthogonal signaling and additive white Gaussian noise. In particular, the behavior of the multiple-access interference (MAI) at the output of the MMSE detector is examined under various asymptotic conditions, including:
Harold Vincent Poor, Sergio Verdú
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