Robust joint beamforming and artificial noise design for secure AF relay networks
Published in IEEE ICCC 2014, 2015
Abstract: This letter studies the secure cooperative transmission for an amplify-and-forward (AF) relay network in the presence of multiple multi-antenna eavesdroppers. Since the perfect channel state information (CSI) of the eavesdroppers are not available, we propose a robust joint distributed beamforming and artificial noise scheme to maximize the worst-case secrecy rate of the network, under the total power constraint of all the relay nodes. With the semidefinite relaxation (SDR) technique, the design can be solved by a one-dimension search which involves a sequence of semidefinite programming (SDP). Simulation results demonstrate the validity of the proposed strategy.
Recommended citation: Wang C, Wang H M. Robust joint beamforming and artificial noise design for secure AF relay networks[C]//2014 IEEE/CIC International Conference on Communications in China (ICCC). IEEE, 2014: 402-406.
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