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In wireless sensor networks, locating a source from its emissions has gained considerable interest over the past few years. In this paper, an enhanced constrained total least squares estimator is proposed for the localization problem under an additive measurement error model. Compared with CTLS algorithm, our method takes not only linear term of TDOA measurement noise but also quadratic term which...
Free probability theory, which has became a main branch of random matrix theory, is a valuable tool for describing the asymptotic behavior of multiple systems, especially for large random matrices. In this paper, using free probability theory, a new cooperative scheme for spectrum sensing is proposed, which shows how asymptotic free behavior of random matrices and the property of Wishart distribution...
Based on free probability theory, a new scheme for frequency band sensing of spreading communication system is proposed. Unlike previous studies in the field, the new scheme does not require the knowledge of the spreading sequences of users and is related to the asymptotic free behavior of random matrices. Simulation result shows that the convergence characteristic holds true even for a small number...
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