Abstract:

Aiming at the problem of information security of the uplink and downlink in the full duplex system, we proposed a secret rate balancing algorithm for both uplink and downlink full duplex communication links based on the design parameters with secure rate. The proposed algorithm could guarantee information security of uplink and downlink full duplex communication links by joint design of information beamforming vector and noise beamforming vector. Under the full duplex base station transmit power constraint, the security rate of the full duplex uplink and downlink communication link is greater than zero. Simulation results verify the effectiveness of the proposed algorithm.

Key words: full duplex communication, beamforming, convex optimization