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IEEE International Conference on Computer and Communications (ICCC)

Secure Transmission of Cognitive Wiretap Networks Based on Differential Spatial Modulation

Yong Chen, Tao Zhang, Yueming Cai, Yongxiang Liu, Weiwei Yang

Published Dec 1, 2019• 2 citations
Publisher

Abstract

This paper studies the secrecy performance of cognitive wiretap networks, in which the secrecy secondary transmitter (Alice) transmits information to multiple secondary receivers (Bobs) in the presence of an eavesdropper (Eve). Specifically, to reduce the power consumption and complexity of the secondary users, this paper put forward a novel transmission scheme based on the differential spatial modulation (DSM), which can reduce the processing complexity at Alice and Bobs. Moreover, the exact and asymptotic closed-form expressions, for secrecy outage probability and effective secrecy throughput, are derived to assess the performance of the proposed DSM scheme. From the analysis, we demonstrate that a) the secrecy diversity is determined by the number of the Alice's antennas and the number of Bobs, b) the secrecy performance of the considered cognitive wiretap networks based on DSM outperforms the same networks without DSM.

DOI
10.1109/iccc47050.2019.9064057

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This paper studies the secrecy performance of cognitive wiretap networks, in which the secrecy secondary transmitter (Alice) transmits information to multiple secondary receivers (Bobs) in the presence of an eavesdropper (Eve). Specifically, to reduce the power consumption and complexity of the secondary users, this paper put forward a novel transmission scheme based on the differential spatial modulation (DSM), which can reduce the processing complexity at Alice and Bobs. Moreover, the exact and asymptotic closed-form expressions, for secrecy outage probability and effective secrecy throughput, are derived to assess the performance of the proposed DSM scheme. From the analysis, we demonstrate that a) the secrecy diversity is determined by the number of the Alice's antennas and the number of Bobs, b) the secrecy performance of the considered cognitive wiretap networks based on DSM outperforms the same networks without DSM.
This paper investigates a secure transmission in the multiple-input multiple-output (MIMO) cognitive wiretap networks, where a secondary transmitter (Alice) sends data to a secondary receiver (Bob) in the presence of an eavesdropper (Eve). In order to solve the problems of inter channel interference and inter antenna synchronization encountered by traditional MIMO technologies, the antenna transmission scheme is adopted at the transmitter. As a comparison, we design two different antenna transmission schemes, namely transmit antenna selection maximal-ratio combining (TAS-MRC) scheme and differential spatial modulation maximal-ratio combining (DSM-MRC) scheme, respectively. Moreover, due to outdated channel state information (CSI) of the interference link from Alice to the primary user (PU), we propose power control mechanism to protect the quality of service (QoS) of PU. Furthermore, the closed-form for the secrecy outage probability and the secrecy throughput with TAS-MRC and DSM-MRC schemes are derived to evaluate the secrecy performance, respectively. What's more, we explore the security diversity gain and coding gain based on the asymptotic secrecy outage probability. As the results, it demonstrates that DSM-MRC requires less CSI and is convenient for modulation and demodulation, but sacrifices some secrecy performance gains between two proposed schemes.
In this paper, we analyze the secrecy performance of multi-antenna cognitive wiretap network, where the secondary transmitter (Alice) communicates with the secondary receiver (Bob) in the presence of an eavesdropper (Eve). Specifically, we investigate the cases of maximal-ratio combining (MRC) with half-duplex (HD) and selection combining/Zero forcing beamforming (SC/ZFB) scheme with full-duplex (FD) operation, respectively. Assuming the Rayleigh fading, closed-form expressions for the secrecy outage probability of cognitive wiretap channels with MRC and SC/ZFB are derived. Furthermore, we provide simple asymptotic approximations for the secrecy outage probability and find that both schemes achieve full diversity. In addition, simulation results reveal that MRC outperforms SC/ZBF in the low interference threshold regime, while the opposite holds in the high interference threshold regime.
In this paper, we investigate the secure transmission based on differential spatial modulation with artificial noise in multiple-input single-output wiretap networks, where a cooperative jammer help the secure transmission between transceivers in the presence of a passive eavesdropper. We derive exact and asymptotic closed-form expressions for secrecy outage probability and effective secrecy throughput of the network. Finally, numerical simulations demonstrate that increasing the transmit power of transmitter or cooperative jammer can improve the secrecy performance of the system, but too large transmit power at transmitter or cooperative jammer is not helpful. Moreover, increasing the number of antennas at transmitter or cooperative jammer brings up better secrecy performance.
In this paper, we investigate the secrecy performance of a multiantenna cognitive wiretap network, where the secondary transmitter (Alice) communicates with the secondary receiver (Bob) in the presence of an eavesdropper (Eve). Specifically, we consider both half-duplex (HD) and full-duplex (FD) operations. For the HD, maximal-ratio combining (MRC) is adopted at Bob, while for the FD, we propose two jamming schemes to deteriorate the quality of the eavesdropper's channel, i.e., selection combining/selection jammer (SC/SJ) and SC/zero forcing beamforming (SC/ZFB). Assuming Rayleigh fading, exact closed-form expressions for the secrecy outage probability of the cognitive wiretap network are derived. In addition, we also provide simple asymptotic approximations for the secrecy outage probability under two distinct scenarios, depending on the quality of the main and wiretap channels. From the analytical results and numerical simulations, it is concluded that all the proposed schemes outperform the SC scheme; all the proposed schemes achieve full diversity when the main channel is much better than the eavesdropper's channel; MRC outperforms SC/SJ and SC/ZBF in the low interference threshold regime, while the opposite holds in the high interference one; and SC/ZFB always achieves better performance than SC/SJ, albeit with higher complexity.
This paper studies the secure transmission in cognitive wiretap relaying networks with full-duplex technique over Rayleigh channels, where a secondary user (SU) transmitter (Alice) aims to transmit confidential information to a multi-antenna legitimate SU receiver (Bob) in the presence of a multi-antenna relay (Relay), a primary user (PU) and a passive eavesdropper (Eve). For secrecy performance enhancement, we propose maximal-ratio combining-zero forcing beamforming/maximal-ratio transmission-selection combining-zero forcing beamforming (MRC-ZFB/MRT-SC-ZFB) scheme. The closed-form expression for the secrecy outage probability (SOP) of the CRNs with MRC-ZFB/MRT-SC-ZFB scheme is derived. From the analysis, we look into the high signal-to-noise ratio (SNR) regime, and present simple secrecy outage approximation for the proposed scheme, which reveals that the secrecy diversity order is min (NR, NRNB), where NRand NBare the number of antennas at Relay and Bob, respectively.
A cognitive wiretap channel is considered with underlay spectrum sharing and multiple primary users. The secondary transmitter communicates with a secondary receiver in the presence of multiple eavesdroppers. The secondary transmitter, the secondary receiver are equipped with multiple antennas, whereas and each eavesdropper is equipped with a single antenna. Secrecy performance of the cognitive wiretap channel is analyzed. Transmit antenna selection (TAS) scheme is implemented to enhance the security in communication. The closed form expression for the secrecy outage probability is derived and the results are validated by carrying out simulations. The impact of multiple primary users in the cognitive wiretap network's secrecy performance is revealed in the results.