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

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

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In this paper, we present a new secrecy-enhancing scheme for the spatial modulation (SM) system, by considering imperfect channel state information (CSI).In the proposed scheme, two antennas are activated at the same time.One of the activated antennas transmits information symbols along with artificial noise (AN) optimized under the imperfect CSI condition.On the other hand, the other activated antenna Whirlpool WHBS92FLTK W Collection Built In 90cm 3 Speeds A Chimney Cooker Hood transmits another AN sequence.

Because the AN are generated by exploiting the imperfect CSI of the legitimate channel, they can only be canceled at neck gaiter the legitimate receiver, while the passive eavesdropper will suffer from interference.We derive the secrecy rate of the proposed scheme in order to estimate the performance.The numerical results demonstrated in this paper verify that the proposed scheme can achieve a better secrecy rate compared to the conventional scheme at the same effective data rate.