Power-Constrained Optimal Cooperative Jamming for Multiuser Broadcast Channel

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Networking
Format: PDF
Optimal Cooperative Jamming (CJ) is studied for MultiUser Multiple-Input Multiple-Output (MU-MIMO) broadcast channel to enhance the physical layer security with the help of a Friendly Jammer (FJ). The authors first derive a necessary and sufficient condition to achieve the asymptotically perfect security and propose an optimal CJ scheme to minimize the maximum Signal-to-Interference-plus-Noise Ratio (SINR) at the eavesdropper subject to a power constraint at the FJ. Then they derive an achievable lower bound of the eavesdropper's SINR and propose an asymptotically optimal CJ scheme achieving the lower bound.
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