Joint Cooperative Beamforming, Jamming and Power Allocation to Secure AF Relay Systems

Описание: Joint Cooperative Beamforming, Jamming and Power Allocation to Secure AF Relay Systems

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The content of the project:
1. IEEE standard reference paper
2. PowerPoint presentation
3. Screenshots
4. Software
5. Source code
6. Videos
7. ReadMe document to guide.

#Beamforming #Jamming #PowerAllocation #AFRelay

ABSTRACT:
The idea of multi-user (nodes) cooperation is an
efficient way to improve the physical-layer security of a wireless
transmission in the presence of passive eavesdroppers. However,
due to the half-duplex constraint of the practical transceivers,
two phases are required for one round of data transmission,
which grants the eavesdroppers two opportunities to wiretap the
information. Therefore, protecting the data transmissions in both
phases is critical. Towards this end, we propose a joint cooperative
beamforming, jamming and power allocation scheme to enhance
the security of an amplify-and-forward (AF) cooperative relay
network in this correspondence. Different from the existing works
assuming that the source node always uses its total power, we
show that the secrecy rate is a quasi-concave function of the
power of the source node so that allocating its total power may
not be optimal. The beamformer design and power optimization
problem can be solved by a bisection method together with a
generalized eigenvalue decomposition, which has a semi-closed
form and is computationally very convenient. Simulations show
the joint scheme greatly improves the security.

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