Results 31 to 40 of about 351,545 (187)
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 +3 more sources
IEEE AccessNon-Line-of-Sight (NLOS) reception is acknowledged as a primary source of positioning error in Global Navigation Satellite System (GNSS) applications, particularly within dense urban settings. When the direct satellite path is obstructed by buildings and
S. Titouni +8 more
doaj +1 more source
Air-to-Ground Large-Scale Channel Characterization by Ray Tracing
IEEE Access, 2022 Through ray tracing simulation on three-dimensional (3D) urban environments, we characterize air-to-ground (A2G) channels for 5G and beyond wireless communications.
Mengan Song +4 more
doaj +1 more source
Statistical Characterization and Mitigation of NLOS Errors in UWB Localization Systems [PDF]
, 2011 In this paper some new experimental results about the statistical characterization of the non-line-of-sight (NLOS) bias affecting time-of-arrival (TOA) estimation in ultrawideband (UWB) wireless localization systems are illustrated.
Montorsi, Francesco +2 more
core +1 more source
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 +2 more sources
LoRaWAN Based Indoor Localization Using Random Neural Networks
Information, 2022 Global Positioning Systems (GPS) are frequently used as a potential solution for localization applications. However, GPS does not work indoors due to a lack of direct Line-of-Sight (LOS) satellite signals received from the End Device (ED) due to thick ...
Winfred Ingabire +3 more
doaj +1 more source
HMM-Based tracking of moving terminals in dense multipath indoor environments [PDF]
, 2005 This paper deals with the problem of radio localization of moving terminals (MTs) for indoor applications with mixed line-of sight/non-line-of-sight (LOS/NLOS) conditions.
C. Morelli +3 more
core +1 more source
Cooperative localization in 5G networks: A survey
ICT Express, 2017 In upcoming 5G networks, key prospects such as increased bandwidth, smaller cells, higher mobile terminal (MT) densities, multiple radio access technologies, and the capability of device-to-device communication are beneficial for localization. Meanwhile,
Ping Zhang, Jian Lu, Yan Wang, Qiao Wang
doaj +1 more source
Coverage and Rate Analysis for Unmanned Aerial Vehicle Base Stations with LoS/NLoS Propagation
, 2018 The use of unmanned aerial vehicle base stations (UAV-BSs) as airborne base stations has recently gained great attention. In this paper, we model a network of UAV-BSs as a Poisson point process (PPP) operating at a certain altitude above the ground users.
Alzenad, Mohamed, Yanikomeroglu, Halim
core +1 more source
Uplink Performance Analysis in D2D-Enabled mmWave Cellular Networks
, 2017 In this paper, we provide an analytical framework to analyze the uplink performance of device-to-device (D2D)-enabled millimeter wave (mmWave) cellular networks.
Gursoy, M. Cenk, Turgut, Esma
core +2 more sources