Secure Transmission for Differential Quadrature Spatial Modulation With Artificial Noise

Abstract

In this paper, we investigate the secure transmission for differential quadrature spatial modulation (DQSM) with artificial noise (AN) in multiple-input single-output wiretap networks, where a cooperative jammer helps the secure transmission between transceivers in the presence of an eavesdropper. To evaluate the secrecy performance of the DQSM with AN in the considered wiretap networks, assuming Rayleigh fading, we derive exact and asymptotic closed-form expressions for secrecy outage probability and effective secrecy throughput under two practical scenarios, i.e., Scenario I, where the eavesdropper is passive and its channel state information (CSI) is unavailable, and Scenario II, where the eavesdropper is active and its CSI is available. Finally, numerical simulations demonstrate that increasing the transmit power of transmitter or cooperative jammer can improve the secrecy performance, but too large transmit power at the transmitter or cooperative jammer is not helpful. Moreover, increasing the number of antennas at the transmitter or cooperative jammer brings up better secrecy performance. INDEX TERMS Physical layer security, performance analysis, differential quadrature spatial modulation, artificial noise.

Secrecy Enhancing Scheme for Spatial Modulation Using Antenna Selection and Artificial Noise

“…It was presented that activating an extra transmit antenna to transmit AN can increase the security of SM. A similar fact was discussed in [11], where the authors proposed a secure transmission scheme for differential quadrature spatial modulation (DQSM) with AN, and it was shown that the AN technique was a meaningful idea to improve the secrecy performance. Because the AN can be also interference to the legitimate receiver, the antenna carrying AN needs to be directed to the null space, and thus, additional beamforming technique was required.…”

“…The received signal at the legitimate receiver Bob, y b , can be rearranged as follows by inserting the result in (11) into (9).…”

Secure Cognitive MIMO Wiretap Networks With Different Antenna Transmission Schemes

“…What's more, each data block actually transmitted depends on the actual data currently and the previously data block, so as to achieve differential modulation in the network using the DSM scheme, thereby eliminating the need for CSI during demodulation by the receiver [19]. Considering the benefits of DSM, authors combine DSM with PLS and investigate the secure transmission based on differential quadrature spatial modulation with artificial noise in MISO wiretap networks in [22]. Despite the above benefits, the PLS by the DSM scheme in MIMO CRNs has not been investigated so far.…”

“…Theorem 2: By using DSM-MRC scheme we can calculate the secrecy outage probability of P DSM −M RC out (R s ), which is get as (22), shown at the bottom of next page.…”

Secure Transmission in Cognitive Wiretap Networks with Full-Duplex Receivers

“…On the basis of SOP, the ST more comprehensively measures the reliability and security of the system in a whole way, which is the product of the complementary probability of P out (R S ) and the predetermined secrecy rate R S (Equation 24, [43]), [44]. Thus, the throughput expression of the two schemes can be written as T…”