Results 41 to 50 of about 81,206 (179)
Rooftop and indoor reception with transmit diversity applied to DVB-T networks: A long term measurement campaign [PDF]
, 2009 Although transmit Delay Diversity (DD) can provide a gain in indoor and other Non Line of Sight situations (NLOS), it can introduce degradation in rooftop reception. In fact, when the Ricean K factor of the channel is significantly high (e.g.
Arrinda, A +6 more
core +1 more source
Indoor wireless channel modeling from 2.4 to 24 GHz using a combined E/H-Plane 2D ray tracing method [PDF]
, 2004 Future wireless systems are moving to high frequencies for additional bandwidth and frequency reuse. This makes it very important to have accurate and time-efficient models for system planning.
Lu, Dai, Rutledge, David
core +1 more source
Multihop relay techniques for communication range extension in near-field magnetic induction communication systems [PDF]
, 2013 In this paper, multihop relaying in RF-based com munications and near field magnetic induction communication (NFMIC) is discussed. Three multihop relay strategies for NFMIC are proposed: Non Line of Sight Magnetic Induction Relay (NLoS-MI Relay), Non ...
Abolhasan, M, Franklin, D, Masihpour, M
core +2 more sources
International Journal of Distributed Sensor Networks, 2018 The mitigation of non-line-of-sight propagation conditions is one of main challenges in wireless signal–based indoor localization. When radio frequency identification localization technology is applied in applications, the received signal strength ...
Jie Wu, Minghua Zhu, Bo Xiao, Wei He
doaj +1 more source
Accurate but fragile passive non-line-of-sight recognition
Communications Physics, 2021 Non-line-of-sight imaging allows reconstruction and recognition of an obscured object, but external manipulation of the data can lead to inaccurate results.
Yangyang Wang +7 more
doaj +1 more source
Computational periscopy with an ordinary digital camera [PDF]
, 2019 Computing the amounts of light arriving from different directions enables a diffusely reflecting surface to play the part of a mirror in a periscope—that is, perform non-line-of-sight imaging around an obstruction.
Goyal, Vivek K. +2 more
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Semi-Definite Programming Relaxation for Non-Line-of-Sight Localization
, 2012 We consider the problem of estimating the locations of a set of points in a k-dimensional euclidean space given a subset of the pairwise distance measurements between the points.
Ekambaram, Venkatesan +2 more
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Average power prediction in microcells [PDF]
, 1994 A propagation model to estimate the average received power in an urban microcell environment has been developed. This model can be used both in line of sight (LOS) and non line of sight (NLOS) conditions in any regular or irregular microcell structure ...
Fernández, M, Ruiz Boqué, Sílvia
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Non-line-of-sight reconstruction via structure sparsity regularization
Optics Letters, 2023 Non-line-of-sight (NLOS) imaging allows for the imaging of obje¬¬cts around a corner, which enables potential applications in various fields such as autonomous driving, robotic vision, medical imaging, security monitoring, etc. However, the quality of reconstruction is challenged by low signal-noise-ratio (SNR) measurements. In this study, we present a
Duolan Huang +3 more
openaire +3 more sources
Performance evaluation of mobile WiMAX with MIMO and relay extensions [PDF]
, 2007 The latest mobile WiMAX standard promises to deliver high data rates over extensive areas and to large user densities. More specifically, data rates are expected to exceed those of conventional cellular technologies.
Bian, YQ, Nix, AR, Strauch, P, Sun, Y
core +2 more sources