Results 101 to 110 of about 12,900 (194)

A Study of Differences in Calculated Capacity when Using Single-, Mixed- or Multiple-Bounce GSCM Schemes [PDF]

open access: yes, 2013
The paper looks for differences in MIMO system capacity when using either single-, mixed-, or multiple-bounce geometry based stochastic channel models (GSCMs).
Katalinić Mucalo, A.   +2 more
core   +1 more source

Beamspace Aware Adaptive Channel Estimation for Single-Carrier Time-varying Massive MIMO Channels

open access: yes, 2017
In this paper, the problem of sequential beam construction and adaptive channel estimation based on reduced rank (RR) Kalman filtering for frequency-selective massive multiple-input multiple-output (MIMO) systems employing single-carrier (SC) in time ...
Ayanoglu, Ender, Guvensen, Gokhan M.
core   +1 more source

A Joint Decoherence-Based AOA and TDOA Positioning Approach for Interference Monitoring in Global Navigation Satellite System

open access: yesApplied Sciences
Global navigation satellite system (GNSS) has been widely used in many fields due to their low cost and high positioning accuracy. Because of the open frequency of navigation signals, the low power of navigation signals, and the growing reliance of many ...
Wenjian Wang, Yinghong Wen, Yongxia Liu
doaj   +1 more source

Benefits and Impact of Joint Metric of AOA/RSS/TOF on Indoor Localization Error

open access: yesApplied Sciences, 2016
The emerging techniques in the Fifth Generation (5G) communication system, like the millimeter-Wave (mmWave) and massive Multiple Input Multiple Output (MIMO), make it possible to measure the Angle-Of-arrival (AOA), Receive Signal Strength (RSS) and Time-
Qing Jiang   +3 more
doaj   +1 more source

Nonisotropic Scattering Characteristic in an Alternant Tree-Blocked Viaduct Scenario on High-Speed Railway at 2.35 GHz

open access: yesInternational Journal of Antennas and Propagation, 2014
This paper presents the nonisotropic scattering characteristic of the mobile radio channel in an alternant tree-blocked viaduct scenario on high-speed railway (HSR) by real field measuring at 2.35 GHz.
Rongchen Sun   +5 more
doaj   +1 more source

Characterization of Multipath Effects in Indoor Positioning Systems by AoA and PoA Based on Optical Signals

open access: yesSensors, 2019
In this paper, we characterize and measure the effects of the errors introduced by the multipath when obtaining the position of an agent by means of Indoor Positioning Systems (IPS) based on optical signal.
Álvaro De-La-Llana-Calvo   +5 more
doaj   +1 more source

Spatial Characterization of GNSS Multipath Channels

open access: yesInternational Journal of Antennas and Propagation, 2012
There is a growing interest in detecting and processing Global Navigation Satellite System (GNSS) signals in indoors and urban canyons by handheld devices.
Hatef Keshvadi   +2 more
doaj   +1 more source

A Hybrid Distance Estimation for Wireless Body Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2013
Wireless body area networks become a new research issue in recent years. In this paper, we propose hibernation and distance estimation schemes for wireless USB (WUSB) over wireless body area networks (WBAN) hierarchical protocol for body sensor networks (
Kyeong Hur, Won-Sung Sohn, Jae-Kyung Kim
doaj   +1 more source

Geometrical statistical channel model with an Inverted-Parabolic spatial distribution

open access: yesTongxin xuebao, 2014
Due to the complexity of calculation for the parameters of angle of arrival(AOA),time of arrival(TOA) and Dopplerspectra(DS),etc.,a proper geometrical statistical channel model was proposed with inverted-parabolic spatial distribution around mobile ...
Jie ZHOU, Dong-dong XU, Kikuchi HISAKAZU
doaj   +2 more sources

A Constrained Least Squares Approach to Mobile Positioning: Algorithms and Optimality

open access: yesEURASIP Journal on Advances in Signal Processing, 2006
The problem of locating a mobile terminal has received significant attention in the field of wireless communications. Time-of-arrival (TOA), received signal strength (RSS), time-difference-of-arrival (TDOA), and angle-of-arrival (AOA) are commonly used ...
Ma W-K, Chan YT, Cheung KW, So HC
doaj   +1 more source

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