Results 181 to 190 of about 95,672 (234)
Some of the next articles are maybe not open access.
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
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), 2002Wireless 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
Pulsar navigation using time of arrival (TOA) and time differential TOA (TDTOA)
Acta Astronautica, 2018Abstract 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 +5 more
openaire +2 more sources
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), 2011This 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
2025 International Conference on Machine Learning and Autonomous Systems (ICMLAS)
Optimal placement of sensor nodes is a challenging issue in localization applications because the Cramér-Rao lower bound (CRLB) of target nodes dependent on the sensor node geometry.
M L Ravi Chandra +2 more
openaire +2 more sources
Optimal placement of sensor nodes is a challenging issue in localization applications because the Cramér-Rao lower bound (CRLB) of target nodes dependent on the sensor node geometry.
M L Ravi Chandra +2 more
openaire +2 more sources
Proceedings of the IEEE 1991 National Aerospace and Electronics Conference NAECON 1991, 2002
A method used for estimation of the position of a moving pulse emitter with constant pulse repeat interval by a single observer is studied. The performance of the estimator depends on the emitter trajectory. A specific trajectory that is symmetrical about the closest point of approach is considered.
null Zhou Yiyu, null Sun Zhongkang
openaire +2 more sources
A method used for estimation of the position of a moving pulse emitter with constant pulse repeat interval by a single observer is studied. The performance of the estimator depends on the emitter trajectory. A specific trajectory that is symmetrical about the closest point of approach is considered.
null Zhou Yiyu, null Sun Zhongkang
openaire +2 more sources
Time-of-Arrival Estimation for Integrated Satellite Navigation and Communication Signals
IEEE Transactions on Wireless Communications, 2023Global navigation satellite systems (GNSSs) are used in numerous fields, but their vulnerability is a global problem that has yet to be solved. A promising way to effectively address this problem is by integrating navigation into emerging dense ...
Qihui Wei +3 more
semanticscholar +1 more source
Times of arrival (TOA) of signals in the Kerr-MOG black hole
General Relativity and Gravitation, 2020This paper studies the effect of frame dragging on the difference of times of arrival of signals coming from a variable pulsar and passing nearby a rotating black hole in the scalar-tensor-vector-gravity alternative theory due to Moffat. It may be used to constrain an additional parameter that theory contains with respect to ordinary general relativity.
G. Y. Tuleganova +4 more
openaire +2 more sources
Pioneering time-of-arrival localization with cable-free and battery-free transponders
Journal of the Acoustical Society of America, 2023In traditional underwater acoustic positioning methods, reliance on systems such as Long Baseline (LBL) and Short Baseline (SBL) localization utilize transponders that actively transmit acoustic pulses.
Lina Pu, Yu Luo, Aijun Song
semanticscholar +1 more source
The Impact of Multipath Information on Time-of-Arrival Estimation
IEEE Transactions on Signal Processing, 2022Time-of-arrival (TOA) based localization plays a central role in current and future localization systems. Such systems, exploiting the fine delay resolution properties of wideband and ultra-wideband (UWB) signals, are particularly attractive for ranging ...
W.M. Gifford, D. Dardari, M. Win
semanticscholar +1 more source