Results 11 to 20 of about 17,521 (206)
IEEE Photonics Journal, 2021 The non-line-of-sight (NLOS) underwater communication can offer a viable route in signal propagation and coverage, thus mitigating the pointing, acquisition, and tracking difficulties in line-of-sight optical communication. However, implementing the NLOS
Mohammed Sait +5 more
doaj +1 more source
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
Diffraction Signal-Based Human Recognition in Non-Line-of-Sight (NLOS) Situation for Millimeter Wave Radar [PDF]
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 In driver assistance or self-driving systems, millimeter-wave radar is an indispensable sensing tool because of its applicability to all weather conditions or non-line-of-sight (NLOS) sensing.This study focuses on a human recognition issue in the NLOS scenario by applying the support vector machine (SVM)-based machine learning approach to a diffraction
Jianghaomiao He +3 more
openaire +2 more sources
A Wi-Fi FTM-Based Indoor Positioning Method with LOS/NLOS Identification
Applied Sciences, 2020 In recent years, many new technologies have been used in indoor positioning. In 2016, IEEE 802.11-2016 created a Wi-Fi fine timing measurement (FTM) protocol, making Wi-Fi ranging more robust and accurate, and providing meter-level positioning accuracy ...
Minghao Si +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
TOA localization for multipath and NLOS environment with virtual stations
EURASIP Journal on Wireless Communications and Networking, 2017 An effective geometrical method which can locate a source based on the time-of-arrival (TOA) measurements and the floor plan information is proposed in simple non-line-of-sight (NLOS) indoor environment where the multiple-bound scattering signal paths ...
Deliang Liu +4 more
doaj +1 more source
Mobile Location with NLOS Identification and Mitigation Based on Modified Kalman Filtering
Sensors, 2011 In order to enhance accuracy and reliability of wireless location in the mixed line-of-sight (LOS) and non-line-of-sight (NLOS) environments, a robust mobile location algorithm is presented to track the position of a mobile node (MN).
Wei Ke, Lenan Wu
doaj +1 more source
Sensors, 2018 The problem of target localization in WSN (wireless sensor network) has received much attention in recent years. However, the performance of traditional localization algorithms will drastically degrade in the non-line of sight (NLOS) environment ...
Jingyu Hua +4 more
doaj +1 more source
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
core +1 more source
Scatterer information based indoor NLOS multiple base station cooperative localization algorithm
Tongxin xuebao, 2021 In indoor environments, the localization accuracy of existing line of sight (LOS) solutions will deteriorate severely in non-line-of-sight (NLOS) environment.In order to solve this problem, an scatterer information based indoor NLOS multiple base ...
Liangbo XIE +6 more
doaj +2 more sources