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Secure M-PSK Communication via Directional Modulation

Citation Author(s):
Ashkan Kalantari, Mojtaba Soltanalian, Sina Maleki, Symeon Chatzinotas, and Bjorn Ottersten
Submitted by:
ashkan kalantari
Last updated:
29 March 2016 - 1:30am
Document Type:
Presentation Slides
Document Year:
Presenters Name:
Ashkan Kalantari
Paper Code:



In this work, a directional modulation-based technique is devised to enhance the security of a multi-antenna wireless communication system employing M-PSK modulation to convey information. The directional modulation method operates by steering the array beam in such a way that the phase of the received signal at the receiver matches that of the intended M-PSK symbol. Due to the difference between the channels of the legitimate receiver and the eavesdropper, the signals received by the eavesdropper generally encompass a phase component different than the actual symbols. As a result, the transceiver which employs directional modulation can impose a high symbol error rate on the eavesdropper without requiring to know the eavesdropper's channel. The optimal directional modulation beamformer is designed to minimize the consumed power subject to satisfying a specific resulting phase and minimal signal amplitude at each antenna of the legitimate receiver. The simulation results show that the directional modulation results in a much higher symbol error rate at the eavesdropper compared to the conventional benchmark scheme, i.e., zero-forcing precoding at the transmitter.

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Dataset Files

direcitonal modulation-ICASSP.pptx