Results 11 to 20 of about 366,927 (296)
Channel Characteristics of Dynamic Off-Body Communications at 60 GHz Under Line-of-Sight (LOS) and Non-LOS Conditions [PDF]
IEEE Antennas and Wireless Propagation Letters, 2017 This letter investigates the first-order characteristics of dynamic off-body communications channels at 60 GHz. In particular, we have studied signal propagation from a chest-worn millimeter-wave transmitter as an adult male walked toward and then away from a hypothetical base station.
Yoo, Seong Ki +4 more
openaire +4 more sources
A new approach to diffraction modelling for line-of-sight (LOS) paths [PDF]
2015 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), 2015 In this paper, we present a new knife-edge diffraction method based on Bullington method for the terrestrial line-of-sight (LOS) paths. The diffraction loss of our new knife-edge diffraction method is compared with the results obtained from the Delta-Bullington method and the measurement data existing in the literature for sample fixed terrestrial ...
Topçu, Satılmış +3 more
openaire +3 more sources
Kendali Formasi Multi-UAV menggunakan Line of Sight (LOS) Guidance Law
Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer, 2017 Ketika suatu UAV (pesawat tanpa awak) sudah mencapai batas kemampuannya, maka diperlukan multi-UAV untuk menggantikan tugas yang dibebankan kepada UAV. Selama ini multi-UAV lebih dipilih dalam menjalankan tugas yang besar sehingga didapatkan tingkat efektivitas yang lebih tinggi disertai kemampuan bertahannya yang lebih bagus dibandingkan milik UAV ...
Dyah Anggun Sartika, Denny Hardiyanto
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Set-based Line-of-Sight (LOS) path following with collision avoidance for underactuated unmanned surface vessel [PDF]
2016 24th Mediterranean Conference on Control and Automation (MED), 2016 A cornerstone ability of an autonomous unmanned surface vessel (USV) is to avoid collisions with stationary obstacles and other moving vehicles while following a predefined path. USVs are typically underactuated, and this paper extends recent results in set-based guidance theory to an underactuated surface vessel, resulting in a switched guidance ...
Moe, Signe, Pettersen, Kristin Ytterstad
openaire +3 more sources
UWB Channel Modeling Improvement in Indoor Line-of-Sight (LOS) Environments
International Journal of Communications, Network and System Sciences, 2010 Channel measurement and modeling is an important issue when designing ultra wideband (UWB) communication systems. A Precise model of the channel response is inevitable for designing an ultra wideband telecommunication system. In this article signal propagation in indoor environment and LOS condition is evaluated and the appropriate model of this ...
Vahid Tabataba Vakili +2 more
openaire +3 more sources
Closed Form Approximations for UAV Line-of-Sight Probability in Urban Environments
IEEE Access, 2023 This paper presents a new approach to estimate the probability of line-of-sight (LoS) for unmanned aerial vehicle (UAV) communications. We provide lower and upper bounds on the probability of LoS in terms of what we call the first-building-LoS ...
Imran Mohammed +3 more
doaj +2 more sources
A Geometry-Based Modelling Approach for the Line-of-Sight Probability in UAV Communications
IEEE Open Journal of the Communications SocietyThis paper presents a geometry-based three-dimensional Probability of Line of Sight $(P_{\mathrm {LoS}})$ model for generic urban environments. The existing $P_{\mathrm {LoS}}$ models are mostly empirical, based on measurements or ray-tracing ...
Abdul Saboor +4 more
doaj +2 more sources
Control Line of Sight (LOS) using Robust Control Technique
International Journal of Control and Automation, 2017 Deepti Thapliyal, Deepak Punetha
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Mathematical Modelling of Engineering Problems, 2022 This research paper presents the Physical (PHY) layer analysis of multiple input multiple output (MIMO) systems in line-of-sight environments between a user equipment (UE) and a base station when an information data is transmitted.
M. Premkumar +4 more
semanticscholar +1 more source
Analisis Pengiriman Data Pada Jaringan Sensor Nirkabel Menggunakan Modul XBEE Dan Wemos
Protek: Jurnal Ilmiah Teknik Elektro, 2020 Perkembangan teknologi jaringan sensor nirkabel (JSN) mengalami kemajuan yang sangat pesat pada belakangan ini. Perkembangan tersebut juga memicu berkembangnya modul wireless yang digunakan dalam JSN.
Asmah Akhriana +3 more
doaj +1 more source