Results 171 to 180 of about 95,355 (231)

ZBMG-LoRa: A Novel Zone-Based Multi-Gateway Approach Towards Scalable LoRaWANs for Internet of Things. [PDF]

Sensors (Basel)
Almuhaya M, Al-Hadhrami T, Brown DJ, Qasem SN.   +3 more
europepmc   +1 more source

Performance evaluation on extended neural network localization algorithm on 5 g new radio technology. [PDF]

Sci Rep
R D, Markkandan S, Arjunan VK.
europepmc   +1 more source

Improvement of Wireless Localization Precision Using Chirp Signals. [PDF]

Sensors (Basel)
Kim KT, Kim KY, Shin Y.
europepmc   +1 more source

Wireless sensor localization based on distance optimization and assistance by mobile anchor nodes: a novel algorithm. [PDF]

PeerJ Comput Sci
Yang H.
europepmc   +1 more source

Long-Range RFID Indoor Positioning System for an Autonomous Wheelchair. [PDF]

Sensors (Basel)
Pereira JS.
europepmc   +1 more source

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Pulsar navigation using time of arrival (TOA) and time differential TOA (TDTOA)

Acta Astronautica, 2018
Abstract Pulsar navigation is a novel autonomous navigation method for deep-space missions. The pulsar navigation method using the time of arrival (TOA) determines the absolute position of the spacecraft. However, its accuracy is greatly affected by system errors, including the ephemeris error of the pulsar and the satellite-borne clock error.
Ning Xiaolin, Yang Yuqing, Gui Mingzhen, Wu Weiren, Fang Jiancheng, Liu Gang   +5 more
openaire   +2 more sources

Estimation of Channel State Information (CSI) in Cell-Free Massive MIMO Based on Time of Arrival (ToA)

Wireless Personal Communications, 2020
Cell-free massive multiple input multiple output (MIMO) comprises a large number of distributed single antenna access points (APs) connected to a network controller through backhaul. Each user is served by neighbouring APs simultaneously. Cell-free Massive MIMO provides decent throughput and coverage improvement as compared to a small-cell.
Aqiel Almamori, Seshadri Mohan
openaire   +2 more sources

Improvement in estimation of time of arrival (TOA) from timing advance (TA)

ICUPC '98. IEEE 1998 International Conference on Universal Personal Communications. Conference Proceedings (Cat. No.98TH8384), 2002
Wireless systems reporting TOA (time of arrival), the propagation time from the mobile station (MS) to the base station (BS), may use this information to assist with automatic location identification (ALI). The TA (timing advance), used in TDMA systems, may be used as an approximation for TOA.
G.P. Yost, S. Panchapakesan
openaire   +2 more sources

Time of arrival (TOA)-based direct location method

2015 16th International Radar Symposium (IRS), 2015
The presented direct location method computes the 3D position of an object using exactly four time-of-arrival (TOA) measurements, i.e. range measurements, to four reference points or stations. This operation is also commonly known as multilateration. Traditionally, this problem can also be solved using three TOA measurements to three reference stations,
M. Khalaf-Allah
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Geometric optimization of a time-of-arrival (TOA) based self-positioning terrestrial system

2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS 2011), 2011
This work investigates geometric optimization of antenna configuration in lateral geometry for a terrestrial time-of-arrival based self-positioning system, considering optimization confronted by two competing and opposing phenomena, the purely geometric analogy of GPS geometric dilution of precision, and tracking errors in correlation of the ...
M. Haspel
openaire   +2 more sources