Robust Secure Beamforming for Multibeam Satellite Communication Systems

This paper proposes a robust beamforming (BF) scheme to enhance the physical layer security (PLS) of a multibeam satellite system operating at Ka band. By considering the effects of beam gain, path loss, and rain attenuation, we first formulate a constrained optimization problem to maximize the mini...

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Vydáno v:IEEE transactions on vehicular technology Ročník 68; číslo 6; s. 6202 - 6206
Hlavní autoři: Lin, Zhi, Lin, Min, Ouyang, Jian, Zhu, Wei-Ping, Panagopoulos, Athanasios D., Alouini, Mohamed-Slim
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.06.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Algorithms
Array signal processing
Attenuation
Beamforming
Channel estimation
Computer simulation
Constraints
Eavesdropping
Frequency modulation
iterative algorithm
Iterative methods
Mathematical analysis
Matrix methods
Multibeam satellite system
Optimization
Rain
Robustness (mathematics)
Satellite broadcasting
Satellite communications
Satellites
secrecy rate
sequential convex approximation
Vectors (mathematics)
Wireless communication
ISSN:0018-9545, 1939-9359
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Popis
Shrnutí:This paper proposes a robust beamforming (BF) scheme to enhance the physical layer security (PLS) of a multibeam satellite system operating at Ka band. By considering the effects of beam gain, path loss, and rain attenuation, we first formulate a constrained optimization problem to maximize the minimal achievable secrecy rate of multiuser under the assumption of imperfect eavesdropping channel and the constraint of total transmit power on the satellite. Since the problem is non-convex and mathematically intractable, we exploit the sequential convex approximation approach and S-procedure method to transform the original problem into one with a series of linear matrix inequality and second-order cone constraints, and then propose an iterative scheme to obtain the optimal BF weight vectors. Finally, simulation results showing the effectiveness and superiority of the proposed algorithm are provided.
Bibliografie:ObjectType-Article-1
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ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2019.2913793