Multi-Carrier Wireless Covert Communication With Delay Constraint
Menghan Lin, Wenjie Wang
Abstract
In this work, we consider the finite blocklength covert wireless communication over the multi-carrier channel, and formulate the optimization problem to maximize the covert transmission rate under a limited power budget. Since the optimization problem is non-convex, we analyze the properties of the objective function and the covertness constraint, and propose a two-step successive-convex-approximation-based (SCA-based) algorithm for achieving a suboptimal solution on subcarriers selection and power allocation. Numerical results are provided to depict the effectiveness of the proposed scheme, and to reveal the benefits of larger bandwidth for covert communication in the finite blocklength regime.
Topics & Concepts
CovertWirelessMathematical optimizationComputer scienceConvex optimizationBandwidth (computing)Optimization problemConstraint (computer-aided design)Convex functionChannel (broadcasting)Transmission (telecommunications)Power (physics)Selection (genetic algorithm)Regular polygonComputer networkAlgorithmMathematicsTelecommunicationsPhysicsLinguisticsArtificial intelligenceQuantum mechanicsPhilosophyGeometryWireless Communication Security TechniquesInternet Traffic Analysis and Secure E-votingCooperative Communication and Network Coding