6 Nov 2020 Here, the downlink LTE signals are used to produce the TOA indoor positioning performances of the LTE OTDOA technique using the first
A Bayesian Probabilistic Approach to Hybrid Localization with GNSS and LTE-OTDOA in Multipath Channels Abstract: For time-of-arrival (TOA) localization, the channel bias introduced by unresolvable multipath and non-line-of-sight (NLOS) reflections severely degrades the performance.
actually located. LTE Release 9 provides support for the following location technologies: Satellite Based Positioning: Autonomous and Assisted Global Navigation Satellite Systems (A-GNSS) such as GPS and GLONASS Mobile Radio Cellular Positioning: Observed Time Difference of Arrival (OTDOA) and enhanced Cell ID (eCID) Hybrid Methods: One of the most promising radio-localization methods in the LTE system is OTDoA (Observed Time Difference of Arrival), in which the position is estimated on the basis of the measurement results of time difference of the arrival of the signals to the UE (User Equipment) antenna from a set of at least three base stations, as well as on the information about both the coordinates of the base stations and about transmission timing at those base stations. OTDOA | Downlink Observed Time Difference of Arrival. • It is defined in 3GPP Rel-9.
lte Release 9 introduced support to the positioning methods Assisted Global Navigation Satellite Systems (a-gnss), Enhanced Cell ID (e-cid), and Observed Time Difference of Arrival (otdoa) [1]. These methods have different position accuracy and requirements, and a single method is not the best choice for every OTDOA is a feature to determine the location of a User Equipment based on radio access network information Downlink OTDOA assistance provides the UE the cell PRS position for intra or inter-frequency RSTD measurements Positioning reference signals are transmitted on antenna port 6 The PRS sequences use QPSK modulation (2 bits per symbol) Observed Time Difference Of Arrival (OTDOA) is also a Release 9 positioning method, in which the UE measures the downlink Positioning Reference Signal (PRS) time difference of arrivals of several neighbor cells in comparison to a reference cell. OTDOA positioning in legacy LTE systems is widely studied in the literature. For example, [6] uses real mea-surements and investigates channel impacts on position-ing accuracy. An error analysis of OTDOA is reported in [7]. Baseline performance based on 3GPP 3D MIMO OTDOA — This method uses the measured timing of downlink signals received from multiple eNBs to locate the user device in relation to neighboring eNBs.
Uppsats: Enhancements in LTE OTDOA Positioning for Multipath Environments. Improving the Performance of OTDOA based Positioning in NB-IoT Systems deployed in long-term-evolution (LTE) based narrow-band Internet-of-things Enhancements in LTE OTDOA Positioning for Multipath Environments. University essay from Linköpings universitet/Kommunikationssystem.
LTE Home: B1/ 3/ 7/8/20/26/28/32/38/40/41 OTDOA Pre-loaded Google Maps *Many factors affect battery life including but not limited to network, transmission
actually located. LTE Release 9 provides support for the following location technologies: Satellite Based Positioning: Autonomous and Assisted Global Navigation Satellite Systems (A-GNSS) such as GPS and GLONASS Mobile Radio Cellular Positioning: Observed Time Difference of Arrival (OTDOA) and enhanced Cell ID (eCID) Hybrid Methods: View Academics in OTDOA in LTE on Academia.edu. Enter the email address you signed up with and we'll email you a reset link.
The accuracy of the observed time difference of arrival (OTDOA) in the long-term evolution (LTE) systems depends on the accuracy of the time of arrival (TOA) measurements, which are often corrupted
Uppsats: Enhancements in LTE OTDOA Positioning for Multipath Environments.
• UE location can be tri-laterated with the knowledge of
OTDOA l.
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We focus on OTDOA, which is a downlink based positioning method. We provide an overview of the OTDOA architecture and protocols, OTDOA (Observed Time Difference Of Arrival) är en positioneringsfunktion introducerad i rel9 E-UTRA ( LTE- radio). Det är en multilaterationsmetod där User 30000 uppsatser från svenska högskolor och universitet. Uppsats: Enhancements in LTE OTDOA Positioning for Multipath Environments. Improving the Performance of OTDOA based Positioning in NB-IoT Systems deployed in long-term-evolution (LTE) based narrow-band Internet-of-things Enhancements in LTE OTDOA Positioning for Multipath Environments.
In the OTDOA positioning method, the UE position is estimated based on measurements taken at the UE of downlink radio signals from multiple E-UTRA TPs (possibly including PRS-only E-UTRA TPs from a PRS-based TBS), along with knowledge of the geographical coordinates of the measured TPs and their
8.2.1 General. In this version of the specification, only OTDOA based on LTE signals is supported. In the OTDOA positioning method, the UE position is estimated based on measurements taken at the UE of downlink radio signals from multiple E-UTRA TPs (possibly including PRS-only E-UTRA TPs from a PRS-based TBS), along with knowledge of the geographical coordinates of the measured TPs and their
The accuracy of the observed time difference of arrival (OTDOA) in the long-term evolution (LTE) systems depends on the accuracy of the time of arrival (TOA) measurements, which are often corrupted by various errors caused by non-light-of-sight propagation, multipath interference, noise, and path detection techniques. Furthermore, signal bandwidth, channel condition, distance from the evolved
arrival (OTDOA) is a positioning technique introduced in Release 9 of the 3GPP LTE specification.
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Maximum likelihood TOA and OTDOA estimation with first arriving path detection for 3GPP LTE systemŽ. W. Xu1*, M. Huang1, C. Zhu2 and A. Dammann3.
It is a multilateration method in which the User LTE OTDOA Positioning Reference Signals. Moved to www.sqimway.com.
If your Wio LTE is currently connected to your computer in DFU mode, you can switch to Normal mode without unplugging the USB cable by simply pressing the
For example, [6] uses real mea-surements and investigates channel impacts on position-ing accuracy. An error analysis of OTDOA is reported in [7]. Baseline performance based on 3GPP 3D MIMO OTDOA — This method uses the measured timing of downlink signals received from multiple eNBs to locate the user device in relation to neighboring eNBs. In dense urban and indoor environments, OTDOA can be used to supplement AGPS, provided the user device can detect position reference signals (PRS) from three or more eNBs. The study found that the existing positioning, based on Observed Time Difference of Arrival (OTDOA) in LTE does meet the FCC indoor user requirements for horizontal accuracy. Location-based services and emergency call positioning drive the development of positioning in wireless networks.
Baseline performance based on 3GPP 3D MIMO deployment and propagation model is investigated in [8]. The work in [9] 2016-06-29 · In addition, we propose an LTE OTDOA positioning technique that compensates the mean TOA offset in the TDOA measurements before applying a positioning algorithm, and we demonstrate the performance improvement using Monte Carlo simulations. In this paper, we do not include OTDOA errors due to the network synchronization and intercell interference. Detection of the First Component of the Received LTE Signal in the OTDoA Method 1. Introduction.