Applied Sciences, 2023 For indoor sensor systems, it is essential to implement an extra supporting area notification part. To inform the real-time coordinates, the time difference of arrival (TDOA) algorithm can be introduced.
Ruixiang Kan +4 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
Research Progress of Non-line-of-sight Underwater Wireless Optical Communication Technology
Guangtongxin yanjiu, 2023 Non-Line-of-Sight (NLOS) Underwater Wireless Optical Communication (UWOC) is mainly realized through the air-seawater interface reflection or the scattering of light by particles in seawater.
KONG Mei-wei +5 more
doaj
, 2020 Emerging single-photon-sensitive sensors combined with advanced inverse methods to process picosecond-accurate time-stamped photon counts have given rise to unprecedented imaging capabilities.
Faccio, D., Velten, A., Wetzstein, G.
core +1 more source
Accurate Empirical Path Loss Models with Route Classification for mmWave Communications
International Journal of Antennas and Propagation, 2022 This paper presents accurate empirical path loss models with route classification for the high band frequency of 5 G wireless. Propagation path routes are mainly classified into line of sight (LOS) and non-line-of-sight (NLOS).
Supachai Phaiboon, Pisit Phokharatkul
doaj +1 more source
Target tracking with line-of-sight identification in sensor networks under unknown measurement noises [PDF]
, 2009 —Tracking a target is a fundamental and crucial problem in wireless sensor networks. It is well known that non-line-of-sight (NLOS) propagation will significantly degrade the tracking accuracy if its effects are ignored.
H. C. So, H. Q. Liu
core +1 more source
2GHz MIMO channel model from experimental outdoor data analysis in UMTS [PDF]
, 2003 The key objective of this work was to obtain a MIMO model for a line of sight (LOS) channel component as well as the covariance matrix for a non-LOS deployment.
Beach, MA +4 more
core +2 more sources
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
Hybrid Beamforming With Sub-arrayed MIMO Radar: Enabling Joint Sensing and Communication at mmWave Band [PDF]
, 2018 In this paper, we propose a beamforming design for dual-functional radar-communication (DFRC) systems at the millimeter wave (mmWave) band, where hybrid beamforming and sub-arrayed MIMO radar techniques are jointly exploited.
Liu, Fan, Masouros, Christos
core +2 more sources
Localization and dynamic link detection for geographic routing in non-line-of-sight (NLOS) environments [PDF]
EURASIP Journal on Wireless Communications and Networking, 2011 Abstract IEEE 802.15.4a networks can provide the geographic routing solution with high location accuracy for the indoor environments. However, in the non-line-of-sight (NLOS) environments, the IEEE 802.15.4a networks may have a large scale location error and an unstable communication link. In this article, we propose a location estimation and
Park Gwitae +3 more
openaire +2 more sources