Detection capabilities of a shifted constellation-based method against pilot contamination attacks

The implementation of channel estimation procedures in modern wireless networks exposes them to the risk of pilot contamination attacks. To protect the system from such types of malicious intervention, a recently proposed method, based on legitimate pilots from shifted constellations, can be applied. In this paper, the detection capability of this method is studied in both the presence and absence of noise. The results are compared to those of another method, where the legitimate pilots are not shifted from the original constellation.