Results 31 to 40 of about 17,699 (203)
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
Hidden Markov models for radio localization in mixed LOS/NLOS conditions [PDF]
, 2007 —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.
Carlo Morelli +4 more
core +1 more source
Line-of-sight and non-line-of-sight links for dispersive terahertz wireless networks
APL Photonics, 2021 Despite the rapidly growing interest in exploiting millimeter and terahertz waves for wireless data transfer, the role of reflected non-line-of-sight (NLOS) paths in wireless networking is one of the least explored questions.
Yasaman Ghasempour +4 more
doaj +1 more source
IEEE Access, 2022 Developing ways to affordably deliver broadband connectivity is one of the major issues of our time. In challenging deployment locations with irregular terrain, traditional Clear-Line-Of-Sight (CLOS) wireless links can be uneconomical to deploy, as the ...
Edward J. Oughton +2 more
doaj +1 more source
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
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
Sensors, 2020 With the rapid development of information and communication technology, the wireless sensor network (WSN) has shown broad application prospects in a growing number of fields. The non-line-of-sight (NLOS) problem is the main challenge to WSN localization,
Long Cheng +3 more
doaj +1 more source
Non-line-of-sight imaging with arbitrary illumination and detection pattern
Nature Communications, 2023 Non-line-of-sight (NLOS) imaging aims at reconstructing targets obscured from the direct line of sight. Existing NLOS imaging algorithms require dense measurements at regular grid points in a large area of the relay surface, which severely hinders their ...
Xintong Liu +5 more
doaj +1 more source
NLOS Signal Detection Based on Single Orthogonal Dual-Polarized GNSS Antenna
International Journal of Antennas and Propagation, 2017 Nowadays users have a high demand for the accuracy of position and velocity, but errors caused by non-line-of-sight (NLOS) signals cannot be removed effectively. Since the GNSS signal is right-hand circular polarized (RHCP), the axial ratio of the strong
Ke Zhang +4 more
doaj +1 more source
Non-line-of-sight Node Localization based on Semi-Definite Programming in Wireless Sensor Networks
, 2009 An unknown-position sensor can be localized if there are three or more anchors making time-of-arrival (TOA) measurements of a signal from it. However, the location errors can be very large due to the fact that some of the measurements are from non-line ...
Chen, Hongyang +4 more
core +2 more sources