Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/167496
Title: MIMO Secret Communications Against an Active Eavesdropper
Authors: Lingxiang Li;Athina P. Petropulu;Zhi Chen
Year: 2017
Publisher: IEEE
Abstract: This paper considers a scenario in which an Alice-Bob pair wishes to communicate in secret in the presence of an active Eve, who is capable of jamming as well as eavesdropping and operates in full-duplex (FD) mode. As countermeasure, Bob operates in FD mode, using a subset of its antennas to receive, and the remaining antennas to transmit jamming noise. Alice and Bob employ linear precoding, and all nodes use Gaussian code books. In that context, our goal is to maximize the achievable secrecy degrees of freedom (S.D.o.F.) of the system. We provide the optimal receive/transmit antennas allocation at Bob, based on which we determine in closed form the maximum achievable S.D.o.F. We also provide a method for constructing the precoding matrices of Alice and Bob, based on which the maximum S.D.o.F. can be achieved. We further investigate the adverse scenario in which Eve knows Bob's transmission strategy and optimizes its transmit/receive antennas allocation in order to minimize the achievable S.D.o.F. For that case, we find the worst case achievable S.D.o.F. Numerical results validate the theoretical findings and demonstrate the performance of the proposed method.
URI: http://localhost/handle/Hannan/167496
volume: 12
issue: 10
More Information: 2387,
2401
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7931587.pdf1.49 MBAdobe PDF
Title: MIMO Secret Communications Against an Active Eavesdropper
Authors: Lingxiang Li;Athina P. Petropulu;Zhi Chen
Year: 2017
Publisher: IEEE
Abstract: This paper considers a scenario in which an Alice-Bob pair wishes to communicate in secret in the presence of an active Eve, who is capable of jamming as well as eavesdropping and operates in full-duplex (FD) mode. As countermeasure, Bob operates in FD mode, using a subset of its antennas to receive, and the remaining antennas to transmit jamming noise. Alice and Bob employ linear precoding, and all nodes use Gaussian code books. In that context, our goal is to maximize the achievable secrecy degrees of freedom (S.D.o.F.) of the system. We provide the optimal receive/transmit antennas allocation at Bob, based on which we determine in closed form the maximum achievable S.D.o.F. We also provide a method for constructing the precoding matrices of Alice and Bob, based on which the maximum S.D.o.F. can be achieved. We further investigate the adverse scenario in which Eve knows Bob's transmission strategy and optimizes its transmit/receive antennas allocation in order to minimize the achievable S.D.o.F. For that case, we find the worst case achievable S.D.o.F. Numerical results validate the theoretical findings and demonstrate the performance of the proposed method.
URI: http://localhost/handle/Hannan/167496
volume: 12
issue: 10
More Information: 2387,
2401
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7931587.pdf1.49 MBAdobe PDF
Title: MIMO Secret Communications Against an Active Eavesdropper
Authors: Lingxiang Li;Athina P. Petropulu;Zhi Chen
Year: 2017
Publisher: IEEE
Abstract: This paper considers a scenario in which an Alice-Bob pair wishes to communicate in secret in the presence of an active Eve, who is capable of jamming as well as eavesdropping and operates in full-duplex (FD) mode. As countermeasure, Bob operates in FD mode, using a subset of its antennas to receive, and the remaining antennas to transmit jamming noise. Alice and Bob employ linear precoding, and all nodes use Gaussian code books. In that context, our goal is to maximize the achievable secrecy degrees of freedom (S.D.o.F.) of the system. We provide the optimal receive/transmit antennas allocation at Bob, based on which we determine in closed form the maximum achievable S.D.o.F. We also provide a method for constructing the precoding matrices of Alice and Bob, based on which the maximum S.D.o.F. can be achieved. We further investigate the adverse scenario in which Eve knows Bob's transmission strategy and optimizes its transmit/receive antennas allocation in order to minimize the achievable S.D.o.F. For that case, we find the worst case achievable S.D.o.F. Numerical results validate the theoretical findings and demonstrate the performance of the proposed method.
URI: http://localhost/handle/Hannan/167496
volume: 12
issue: 10
More Information: 2387,
2401
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7931587.pdf1.49 MBAdobe PDF