Secure Transmission in Cognitive MIMO Relaying Networks With Outdated Channel State Information

Tao Zhang; Yueming Cai; Yuzhen Huang; Quang Duong; Weiwei Yang

doi:10.1109/ACCESS.2016.2608966

Secure Transmission in Cognitive MIMO Relaying Networks With Outdated Channel State Information

Tao Zhang, Yueming Cai, Yuzhen Huang, Quang Duong, Weiwei Yang

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20 Citations (Scopus)

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Abstract

In this paper, we introduce transmit antenna selection/maximal-ratio combining (TAS/MRC) scheme in dualhop randomize-and-forward (RaF) cognitive multiple-input multiple-output (MIMO) wiretap networks with outdated channel state information (CSI). In this network, the secondary transmitter adopts TAS scheme to choose the antenna with the maximal received signal-to-noise ratio (SNR), while the secondary receiver and eavesdropper adopt MRC scheme to combine the received signals. To thoroughly assess the secrecy performance achieved by TAS/MRC scheme and the impact of outdated CSI onthe secrecy performance, we derive a new closed-form expression for the secrecy outage probability of dual-hop RaF cognitive MIMO wiretap networks. In order to achieve more insights on the application of TAS/MRC scheme, we further present tractable asymptotic secrecy outage probability at high SNR regimes under two distinct scenarios. From our analysis, several important concluding remarks are obtained as follows: a) The RaF relaying strategy achieves better secrecy performance than that of the decode-and-forward (DF) relaying strategy for dual-hop cognitive MIMO wiretap networks, b) Outdated CSI decreases the secrecy diversity gain of TAS/MRC scheme from NR min (NA, NB) tomin (NR, NB), c) Although TAS/MRC scheme can not attain full secrecy diversity gain for the considered system with outdated CSI, it still can achieve an extra secrecy coding gain compared with random antenna selection/MRC (RAS/MRC) scheme.

Original language	English
Number of pages	12
Journal	IEEE Access
Early online date	13 Sep 2016
DOIs	https://doi.org/10.1109/ACCESS.2016.2608966
Publication status	Early online date - 13 Sep 2016

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Secure Transmission in Cognitive MIMO Relaying Networks With Outdated Channel State Inform
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Zhang, T., Cai, Y., Huang, Y., Duong, Q., & Yang, W. (2016). Secure Transmission in Cognitive MIMO Relaying Networks With Outdated Channel State Information. IEEE Access. https://doi.org/10.1109/ACCESS.2016.2608966

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title = "Secure Transmission in Cognitive MIMO Relaying Networks With Outdated Channel State Information",

abstract = "In this paper, we introduce transmit antenna selection/maximal-ratio combining (TAS/MRC) scheme in dualhop randomize-and-forward (RaF) cognitive multiple-input multiple-output (MIMO) wiretap networks with outdated channel state information (CSI). In this network, the secondary transmitter adopts TAS scheme to choose the antenna with the maximal received signal-to-noise ratio (SNR), while the secondary receiver and eavesdropper adopt MRC scheme to combine the received signals. To thoroughly assess the secrecy performance achieved by TAS/MRC scheme and the impact of outdated CSI onthe secrecy performance, we derive a new closed-form expression for the secrecy outage probability of dual-hop RaF cognitive MIMO wiretap networks. In order to achieve more insights on the application of TAS/MRC scheme, we further present tractable asymptotic secrecy outage probability at high SNR regimes under two distinct scenarios. From our analysis, several important concluding remarks are obtained as follows: a) The RaF relaying strategy achieves better secrecy performance than that of the decode-and-forward (DF) relaying strategy for dual-hop cognitive MIMO wiretap networks, b) Outdated CSI decreases the secrecy diversity gain of TAS/MRC scheme from NR min (NA, NB) tomin (NR, NB), c) Although TAS/MRC scheme can not attain full secrecy diversity gain for the considered system with outdated CSI, it still can achieve an extra secrecy coding gain compared with random antenna selection/MRC (RAS/MRC) scheme.",

author = "Tao Zhang and Yueming Cai and Yuzhen Huang and Quang Duong and Weiwei Yang",

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AU - Cai, Yueming

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AU - Duong, Quang

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AB - In this paper, we introduce transmit antenna selection/maximal-ratio combining (TAS/MRC) scheme in dualhop randomize-and-forward (RaF) cognitive multiple-input multiple-output (MIMO) wiretap networks with outdated channel state information (CSI). In this network, the secondary transmitter adopts TAS scheme to choose the antenna with the maximal received signal-to-noise ratio (SNR), while the secondary receiver and eavesdropper adopt MRC scheme to combine the received signals. To thoroughly assess the secrecy performance achieved by TAS/MRC scheme and the impact of outdated CSI onthe secrecy performance, we derive a new closed-form expression for the secrecy outage probability of dual-hop RaF cognitive MIMO wiretap networks. In order to achieve more insights on the application of TAS/MRC scheme, we further present tractable asymptotic secrecy outage probability at high SNR regimes under two distinct scenarios. From our analysis, several important concluding remarks are obtained as follows: a) The RaF relaying strategy achieves better secrecy performance than that of the decode-and-forward (DF) relaying strategy for dual-hop cognitive MIMO wiretap networks, b) Outdated CSI decreases the secrecy diversity gain of TAS/MRC scheme from NR min (NA, NB) tomin (NR, NB), c) Although TAS/MRC scheme can not attain full secrecy diversity gain for the considered system with outdated CSI, it still can achieve an extra secrecy coding gain compared with random antenna selection/MRC (RAS/MRC) scheme.

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