Results 201 to 210 of about 1,281 (254)

On the Jamming Power Allocation for Secure Amplify-and-Forward Relaying via Cooperative Jamming

IEEE Journal on Selected Areas in Communications, 2013
In this paper, we investigate secure communications in two-hop wireless relaying networks with one eavesdropper. To prevent the eavesdropper from intercepting the source message, the destination sends an intended jamming noise to the relay, which is referred to as cooperative jamming.
Ki-Hong Park, Mohamed-Slim Alouini
exaly   +3 more sources

Relay selection for secure cooperative networks with jamming

IEEE Transactions on Wireless Communications, 2009
This paper deals with relay selection in cooperative networks with secrecy constraints. The proposed scheme enables an opportunistic selection of two relay nodes to increase security against eavesdroppers. The first relay operates as a conventional mode and assists a source to deliver its data to a destination via a decode-and-forward strategy.
John Thompson   +2 more
exaly   +3 more sources

User cooperation to mitigate the jamming in OFDMA networks

Wireless Networks, 2021
In this paper, jamming and anti-jamming in a time slotted orthogonal frequency division multiple access (OFDMA) are investigated. The users of the network cooperate to mitigate the jamming effect. Interactions among the network users and the jammer are modeled by a mixed integer non-cooperative generalized game which is a NP-hard problem.
Hossein Noori   +1 more
openaire   +1 more source

Optimal cooperative jamming for security

2011 - MILCOM 2011 Military Communications Conference, 2011
In this paper, based on a cooperative jamming scheme, the design of the optimal covariance matrix of the artificial noise produced by a helper that maximizes the secret rate between a source and legitimate destination pair in the presence of multiple eavesdroppers is addressed.
Han-Ting Chiang, James S. Lehnert
openaire   +1 more source

Cooperative Jamming for Secrecy of Wireless Communications

2018 International Conference on Networking and Network Applications (NaNA), 2018
This paper explores cooperative jamming for security in wireless networks. No location data of eavesdropper is available, meanwhile no constraint on the figures of eavesdroppers is posited. A cooperative jamming approach is introduced for jamming the eavesdroppers any location in the system, even through the eavesdroppers are established quite adjacent
Baihe Ma   +3 more
openaire   +1 more source

Uncoordinated Cooperative Jamming for Secret Communications

IEEE Transactions on Information Forensics and Security, 2013
We consider a Gaussian wiretap channel model with a single-antenna source, destination and eavesdropper. The communication is assisted by multiple multiantenna helpers that transmit noise to confound the eavesdropper. First, we consider a nulling scheme, in which each helper independently transmits noise, designed to maximize the system secrecy rate ...
Shuangyu Luo   +2 more
openaire   +1 more source

Secrecy at Physical Layer in NOMA with Cooperative Jamming

2020 National Conference on Communications (NCC), 2020
We have proposed and analyzed secrecy performance of a network architecture which contains a source, two destinations, a friendly jammer (FJ) and an eavesdropper (Eve). To jam the Eve in order to secure the confidential information of both users, the FJ sends a jamming signal while the source sends the combined information signal using non-orthogonal ...
Shashibhushan Sharma   +2 more
openaire   +1 more source

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