Results 1 to 10 of about 16,254 (139)

Mixed Power Control Strategies for Cognitive Radio Networks under SINR and Interference Temperature Constraints [PDF]

open access: yesRadioengineering, 2014
Without consideration of the minimum signal-to-interference-plus-noise ratio (SINR) and frequent information exchange, traditional power control algorithms can not always satisfy SINR requirements of secondary users (SUs) and primary users (PUs) in ...
Y. J. Xu, X. H. Zhao
doaj   +2 more sources

Enhancing Spectral Efficiency of 6G Downlink Beamforming via Cooperative Multi-Agent Deep Reinforcement Learning [PDF]

open access: yesSensors
This paper presents a new beamforming algorithm for Multi-User Multiple-Input Multiple-Output (MU-MIMO) systems using Multi-Agent Reinforcement Learning (MARL).
Ali Al Janaby   +2 more
doaj   +2 more sources

Energy Efficient Secure Communication Model against Cooperative Eavesdropper

open access: yesApplied Sciences, 2021
In a wiretap channel system model, the jammer node adopts the energy-harvesting signal as artificial noise (jamming signal) against the cooperative eavesdroppers.
Akashkumar Rajaram   +3 more
doaj   +1 more source

UAV Relay Flight Path Planning in the Presence of Jamming Signal

open access: yesIEEE Access, 2019
The flight path of the unmanned aerial vehicle (UAV) relay can significantly affect the performance of the wireless relay communication system. In this paper, we investigate the optimization of the UAV flight path in a wireless relay communication system,
Meng-Chuan Mah   +2 more
doaj   +1 more source

Spectral Correlation for Signal Presence Detection and Frequency Acquisition of Small Satellites

open access: yesAerospace, 2021
Challenges in interference-limited satellite detection arising from the low-earth orbit (LEO) and the Industrial, Scientific and Medical (ISM) frequency bands are addressed.
Jonas Hofmann   +4 more
doaj   +1 more source

Effects of practical impairments on cooperative distributed antennas combined with fractional frequency reuse [PDF]

open access: yes, 2012
Cooperative Multiple Point (CoMP) transmission aided Distributed Antenna Systems (DAS) are proposed for increasing the received Signal-to-Interference-plus-Noise-Ratio (SINR) in the cell-edge area of a cellular system employing Fractional Frequency Reuse
Hanzo, Lajos   +4 more
core   +1 more source

Impact of Line-of-Sight and Unequal Spatial Correlation on Uplink MU-MIMO Systems [PDF]

open access: yes, 2017
Closed-form approximations of the expected per-terminal signal-to-interference-plus-noise-ratio (SINR) and ergodic sum spectral efficiency of a multiuser multiple-input multiple-output system are presented.
Dmochowski, Pawel A.   +4 more
core   +2 more sources

Near-ML Detection Based on Multilevel SINR Thresholding for Mode Division Multiplexing Transmission With Mode-Dependent Loss

open access: yesIEEE Access, 2021
The probability distribution of the signal-to-interference plus noise ratio (SINR) is analyzed and approximated by the generalized gamma distribution for mode-dependent loss (MDL)-impaired fiber links.
Siyu Gong   +4 more
doaj   +1 more source

Influence of Interference in MIMO Power Line Communication Systems [PDF]

open access: yes, 2014
International audienceFor a few years, MIMO technique has been considered as the key to increase the data rate in the next generation of power line communications.
Amis Cavalec, Karine   +4 more
core   +4 more sources

Random Matrix Theory Predictions of Dominant Mode Rejection Beamformer Performance

open access: yesIEEE Open Journal of Signal Processing, 2022
Adaptive beamformers use a sensor covariance matrix estimated from data snapshots to mitigate directional interference and attenuate uncorrelated noise.
Christopher Hulbert, Kathleen Wage
doaj   +1 more source

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