Results 31 to 40 of about 186,182 (305)

Cooperative Beamforming With Artificial Noise Injection for Physical-Layer Security

open access: yesIEEE Access, 2023
In the sixth-generation (6G) communications, how to deploy and manage massively connected Internet-of-Things (IoT) nodes will be one of the key technical challenges, because 6G is expected to provide 10 times higher connection, compared to 5G.
Geunyeong Jang   +3 more
doaj   +1 more source

Cooperative Jammer Selection for Secrecy Improvement in Cognitive Internet of Things

open access: yesSensors, 2018
Smart homes can improve the quality of life and be implemented by Internet of Things (IoT) technologies. However, security is a very important issue in smart homes.
Ping Xie   +4 more
doaj   +1 more source

Power and Time Slot Allocation Method for Secured Satellite Transmission Based on Weighted Fractional Data Carrying Artificial Noise

open access: yesIEEE Access, 2018
In this paper, a power and time slot allocation method is proposed for the weighted fractional data carrying artificial noise (DCAN) to secure satellite transmission.
Ruiyang Xu   +4 more
doaj   +1 more source

Low rank prior in single patches for non-pointwise impulse noise removal [PDF]

open access: yes, 2015
This paper introduces a low rank prior in small oriented noise-free image patches: Considering an oriented patch as a matrix, a low-rank matrix approximation is enough to preserve the texture details in the optimally oriented patch.
Trucco, Emanuele; id_orcid   +2 more
core   +1 more source

Covert Wireless Communication With Artificial Noise Generation

open access: yesIEEE Transactions on Wireless Communications, 2018
Covert communication conceals the transmission of the message from an attentive adversary. Recent work on the limits of covert communication in additive white Gaussian noise (AWGN) channels has demonstrated that a covert transmitter (Alice) can reliably transmit a maximum of $\mathcal{O}\left(\sqrt{n}\right)$ bits to a covert receiver (Bob) without ...
Ramin Soltani   +4 more
openaire   +2 more sources

Exploiting ground effects for surface transport noise abatement [PDF]

open access: yes, 2016
Growing demand on transportation, road and railway networks has increased the risk of annoyance from these sources and the need to optimise noise mitigation.
Taherzadeh Shahram   +5 more
core   +1 more source

Adaptive noise cancelling and time–frequency techniques for rail surface defect detection [PDF]

open access: yes, 2015
Adaptive noise cancelling (ANC) is a technique which is very effective to remove additive noises from the contaminated signals. It has been widely used in the fields of telecommunication, radar and sonar signal processing.
Liang, B.   +11 more
core   +1 more source

Artificial Noise Aided Hybrid Analog-Digital Beamforming for Secure Transmission in MIMO Millimeter Wave Relay Systems

open access: yesIEEE Access, 2019
Millimeter wave (mm-wave) communications, especially mm-wave relay systems, have been considered as a key technology for next-generation wireless networks due to the rich spectrum resources.
Shaoyu Wang   +5 more
doaj   +1 more source

Power Allocation for Secrecy-Capacity-Optimization-Artificial-Noise Secure MIMO Precoding Systems under Perfect and Imperfect Channel State Information

open access: yes, 2021
In this paper, we consider the physical layer security problem of the wireless communication system. For the multiple-input, multiple-output (MIMO) wireless communication system, secrecy capacity optimization artificial noise (SCO−AN) is introduced and ...
Yebo Gu, Bowen Huang, Zhilu Wu
core   +1 more source

Acoustic Metasurface for Space‐time Reflection Manipulation

open access: yesAdvanced Science
Recently, space‐time modulation has revolutionized the wave engineering technologies, providing unprecedented opportunities beyond traditional static systems.
Yunhan Yang   +6 more
doaj   +1 more source

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