Results 41 to 50 of about 351,545 (187)

'The Brick' is not a brick : A comprehensive study of the structure and dynamics of the Central Molecular Zone cloud G0.253+0.016 [PDF]

, 2019
© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.In this paper we provide a comprehensive description of the internal dynamics of G0.253+0.016 (a.k.a.
Bally, J., Barnes, A. T., Battersby, C., Beuther, H., Butterfield, N., Contreras, Y., Dale, James, Ginsburg, A., Haworth, T. J., Henning, T., Henshaw, J. D., Jackson, J. M., Kauffmann, J., Kruijssen, J. M. D., Longmore, S. N., Mills, E. A. C., Pillai, T., Ragan, S., Riener, M., Sokolov, V., Walker, D. L., Zhang, Q.   +21 more
core   +7 more sources

A Low-Complexity Solution for Optimizing Binary Intelligent Reflecting Surfaces towards Wireless Communication

Future Internet
Intelligent Reflecting Surfaces (IRSs) enable us to have a reconfigurable reflecting surface that can efficiently deflect the transmitted signal toward the receiver.
Santosh A. Janawade , Prabu Krishnan , Krishnamoorthy Kandasamy , Shashank S. Holla , Karthik Rao , Aditya Chandrasekar    +5 more
doaj   +1 more source

Optimal Constrained Wireless Emergency Network Antennae Placement [PDF]

, 2018
With increasing number of mobile devices, newly introduced smart devices, and the Internet of things (IoT) sensors, the current microwave frequency spectrum is getting rapidly congested.
Gaikwad, Swapnil Mohan
core   +1 more source

Uplink Spectral Efficiency of Massive MIMO with Spatially Correlated Rician Fading

, 2018
This paper considers the uplink (UL) of a multi-cell Massive MIMO (multiple-input multiple-output) system with spatially correlated Rician fading channels.
Björnson, Emil, Larsson, Erik G., Özdogan, Özgecan   +2 more
core   +1 more source

Target tracking with line-of-sight identification in sensor networks under unknown measurement noises [PDF]

, 2009
—Tracking a target is a fundamental and crucial problem in wireless sensor networks. It is well known that non-line-of-sight (NLOS) propagation will significantly degrade the tracking accuracy if its effects are ignored.
H. C. So, H. Q. Liu
core   +1 more source

An Indoor Channel Model for High Data-Rate Communications in D-Band

IEEE Access, 2020
This paper proposes a measurement based modeling of D-band indoor channels. Different indoor environments were considered including Line-of-Sight (LOS) and Non Line-of-Sight (NLOS) conditions.
L. Pometcu, R. D'Errico
doaj   +1 more source

Monotonicity Results for Coherent MIMO Rician Channels [PDF]

, 2005
The dependence of the Gaussian input information rate on the line-of-sight (LOS) matrix in multiple-input multiple-output coherent Rician fading channels is explored.
Hoesli, Daniel, Kim, Young-Han, Lapidoth, Amos   +2 more
core   +2 more sources

Machine learning-based intelligent localization technique for channel classification in massive MIMO

Discover Internet of Things
Multiple-input multiple-output (MIMO) technology has been widely adopted in wireless communications, which enables the simultaneous transmission of multiple data streams via multiple transmitting and receiving antennas.
Fadhil Ghrabat, Huiling Zhu, Jiangzhou Wang   +2 more
doaj   +1 more source

Performance Analysis of Dense Small Cell Networks With Practical Antenna Heights Under Rician Fading

IEEE Access, 2018
In this paper, we examine the combined impacts of distance-dependent Rician fading channel model and the absolute difference between the heights of base station (BS) and user equipment (UE) antennas on the coverage probability and the area spectral ...
Amir H. Jafari, David Lopez-Perez, Ming Ding, Jie Zhang   +3 more
doaj   +1 more source

Average Error Probability Analysis in mmWave Cellular Networks

, 2015
In this paper, a mathematical framework for the analysis of average symbol error probability (ASEP) in millimeter wave (mmWave) cellular networks with Poisson Point Process (PPP) distributed base stations (BSs) is developed using tools from stochastic ...
Gursoy, M. Cenk, Turgut, Esma
core   +1 more source