A Novel Wireless Channel Confusion Technique with Intelligent Reflecting Surface

In this paper, we propose a novel intelligent reflecting surface (IRS) based wireless channel confusion technique for energy efficient jamming. Since IRS consists of passive reflecting elements, its amplitude and phase can be changed rapidly. Due to its rapid alternation of passive elements, IRS makes legitimate receiver to acquire wrong channel state information (CSI) by changing effective channel of legitimate network so that the channel at pilot signal slot and at data signal slots are different. As a result, channel confusion technique can effectively degrade the communication performance of legitimate network even legitimate transmitter uses much higher transmit power. The jamming performance of proposed IRS based channel confusion technique is evaluated by extensive computer simulation. Moreover, it is shown that proposed IRS based channel confusion technique is better jamming technique than Gaussian jamming technique.