Outage Constrained Robust Secure Transmission for MISO Wiretap Channels
Shuai Ma, Mingyi Hong, Enbin Song, Xiangfeng Wang, Dechun Sun

TL;DR
This paper develops a robust beamforming method for MISO wiretap channels that maximizes secrecy rate while satisfying outage probability constraints, ensuring secure communication under channel uncertainties.
Contribution
Introduces a novel two-step algorithm for outage-constrained robust beamforming, capable of achieving high-quality or exact solutions under various uncertainty models.
Findings
Algorithms effectively maximize secrecy rate under outage constraints
Proposed methods demonstrate robustness in simulations
Some solutions are globally optimal
Abstract
In this paper we consider the robust secure beamformer design for MISO wiretap channels. Assume that the eavesdroppers' channels are only partially available at the transmitter, we seek to maximize the secrecy rate under the transmit power and secrecy rate outage probability constraint. The outage probability constraint requires that the secrecy rate exceeds certain threshold with high probability. Therefore including such constraint in the design naturally ensures the desired robustness. Unfortunately, the presence of the probabilistic constraints makes the problem non-convex and hence difficult to solve. In this paper, we investigate the outage probability constrained secrecy rate maximization problem using a novel two-step approach. Under a wide range of uncertainty models, our developed algorithms can obtain high-quality solutions, sometimes even exact global solutions, for the…
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Taxonomy
TopicsWireless Communication Security Techniques · Cooperative Communication and Network Coding · Wireless Signal Modulation Classification
