We propose and analyze secret key generation using intelligent reflecting surface (IRS) assisted wireless communication networks. To this end, we first formulate the minimum achievable capacity for an IRS acting as a passive beamformer in presence of multiple eavesdroppers. Next, develop optimization framework coefficients based on lower bound. derive tractable efficient solution, design semide...

We present simulation-based studies of the use of compressively sensed spectral-polarimetric spatial image data from a solar-illuminated reflecting surface to recover its material signature, three-dimensional (3D) shape, pose, and degree of surface roughness. The spatial variations of the polarimetric BRDF around glint points contain unique information about the shape and roughness of the refle...

Intelligent reflecting surfaces (IRSs) have been attracting attention as a solution to coverage hole problems in millimeter-wave communication areas. They are considered be one of the key technologies next-generation mobile systems. Since polarized multiple-input-multiple-output (MIMO) is utilized systems deliver high-speed data transmission, an IRS also required applied for MIMO and reflect si...

The performance of a sound barrier is usually degraded if a large reflecting surface is placed on the source side. A wave-trapping barrier (WTB), with its inner surface covered by wedge-shaped structures, has been proposed to confine waves within the area between the barrier and the reflecting surface, and thus improve the performance. In this paper, the deterioration in performance of a conven...

In this paper, we consider an integrated data and energy network D2D communication coexistence (DED2D) system. The DED2D system allows a base station (BS) to transfer information-demanded users (IUs) energy-demanded (EUs), i.e., using time-fraction-based information (TFIET) scheme. Furthermore, the enables communications share spectrum with BS. Therefore, addresses growth of demands next genera...

Intelligent reflecting surface (IRS) is a new promising technology that able to reconfigure the wireless propagation channel via smart and passive signal reflection. In this paper, we investigate capacity region of two-user communication network with one access point (AP) aided by M IRS elements for enhancing user-AP channels, where incurs negligible delay, thus channels follow classic discrete...

The physical layer security (PLS) performance of a wireless communication link through large reflecting surface (LRS) with phase errors is analyzed. Leveraging recent results that express the LRS-based composite channel as an equivalent scalar fading channel, we show eavesdropper's Rayleigh distributed and independent legitimate link. different scaling laws eavesdroppers signal-to-noise ratios ...

Intelligent reflecting surfaces (IRS) have been proposed as a revolutionary technology owing to its capability of adaptively reconfiguring the propagation environment in cost-effective and hardware-efficient fashion. While application IRS passive reflector enhance performance wireless communications has widely investigated literature, using transmitter recently is emerging new concept attractin...

Bistatic backscatter communication (BackCom) allows passive tags to transmit over extended ranges, but at the cost of having carrier emitters either transmitting high powers or being deployed very close tags. In this paper, we examine how presence an intelligent reflecting surface (IRS) could benefit bistatic BackCom system. We study power minimization problem emitter, where its beamforming vec...