Results 231 to 240 of about 553,105 (269)
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A Modified Energy Detector for Random Signals in Gaussian Noise
IEEE Communications Letters, 2015This letter proposes a new modified energy detector for random signals in Gaussian noise. This new detector, whose decision variable is the weighted sum of the signal amplitude and its square, has a simple structure similar to the conventional energy detector.
Huayan Guo, Wei Jiang 0003, Wu Luo
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An asymptotically optimal random modem and detector for robust communication
IEEE Transactions on Information Theory, 1990Coherent communication over a waveform channel corrupted by thermal noise and by an unknown and arbitrary interfering signal of bounded power is considered. For a fixed encoder, a random modulator/demodulator (modem) and detector are derived. They asymptotically minimize the worst-case error probability as the blocklength of the encoder becomes large ...
Brian L. Hughes, Murad Hizlan
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Locally robust array detectors for random signals
IEEE Transactions on Information Theory, 1978Summary: Detection of random signals in arrays of receivers is considered when the exact distribution of the additive noise is not known. Locally robust correlator-type test statistics are obtained for weak-signal detection, for multivariate array noise densities in classes described by three different extensions of the univariate Tukey-Huber ...
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A Collision Resolution Protocol for Random Access Channels with Energy Detectors
IEEE Transactions on Communications, 1982In this paper, we consider the random accessing of a single slotted channel by a large number of packet-transmitting, bursty users. We assume that feedback broadcasting is available where some different information, in addition to the information assumed by the Capetanakis, Gallager, Massey, etc., models, is included in the feedback.
Leonidas Georgiadis +1 more
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Performance analysis of a detector for nonstationary random signals
1995 International Conference on Acoustics, Speech, and Signal Processing, 2002The detection of nonstationary random signals is an important sonar problem which also has potential applications in diverse areas such as biomedical signal processing and spread spectrum communications. The primary problem with applying a powerful test like the generalized likelihood ratio test (GLRT) is the computational effort required to search for
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Operation mode detectors for random signal generators
Automation and Remote Control, 2010We propose efficient methods of estimating oscillation modes in dynamic systems based on the spectral representation and Poincare recurrence theorem. We show hardware implementations for operation mode detectors for chaotic oscillations.
L. S. Sotov, V. N. Kharin, A. L. Khvalin
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Mining Outliers with Ensemble of Heterogeneous Detectors on Random Subspaces
2010Outlier detection has many practical applications, especially in domains that have scope for abnormal behavior. Despite the importance of detecting outliers, defining outliers in fact is a nontrivial task which is normally application-dependent. On the other hand, detection techniques are constructed around the chosen definitions.
Hoang Vu Nguyen +2 more
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An on-chip homodyne detector for generating random numbers
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2017The homodyne detector is a primitive element in many quantum optics experiments. It is primarily a characterization device, used for measuring the quantum state of the electromagnetic field[1]. Quantum integrated photonics[2], in which optical sources, circuits, and detectors are monolithically integrated on a semi-conductor chip, provides a compact ...
Dylan H. Mahler +9 more
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CT detector evaluation with complex random backgrounds
SPIE Proceedings, 2012Modern computed tomography (CT) uses detector arrays consisting of large numbers of photodiodes with scintil- lator crystals. The number of pixels in the array can play an important role in system performance. Considerable research has been performed on signal detection in flat backgrounds under various conditions, but little has been done with ...
Helen Fan, Harrison H. Barrett
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Generating an Approximately Optimal Detector Set by Evolving Random Seeds
2009 Eighth IEEE International Conference on Dependable, Autonomic and Secure Computing, 2009The detector generation algorithm is the core of a Negative Selection Algorithm (NSA). In most previous work, the NSAs generate the detector set randomly, which cannot guarantee to obtain an efficient detector set. To generate an approximately optimal detector set, in this paper, a novel detector generation algorithm for the Real-Valued Negative ...
Jie Zhang, Wenjian Luo, Baoliang Xu
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