In this paper, we address dynamic network selection problems of mobile users in an intelligent reflecting surface (IRS)-enabled wireless network. particular, the dynamically select different service providers (SPs) and services over time. The are composed adjustable resources IRS transmit power. To formulate SP selection, adopt evolutionary game which able to adapt their selections depending on...

Intelligent reflecting surface (IRS) has emerged as a promising technique for wireless communication networks. By dynamically tuning the reflection amplitudes/phase shifts of large number passive elements, IRS enables flexible channel control and configuration thereby enhances signal transmission rate reliability significantly. Despite vast literature on designing optimizing assorted IRS-aided ...

Reconfigurable intelligent surface (RIS) provides a promising way to build the programmable wireless transmission environments in future. Owing large number of reflecting elements used at RIS, joint optimization for active beamforming transmitter and passive reflector RIS is usually complicated time-consuming. To address this problem, article proposes low-complexity algorithm based on fractiona...

In recent years, intelligent reflecting surface (IRS) has emerged as a promising technology for 6G due to its potential/ability significantly enhance energy- and spectrum-efficiency. To this end, it is crucial adjust the phases of elements IRS, most research works focus on how optimize/quantize phase different optimization objectives. particular, quantized shift (QPS) assumed be available at wh...

Terahertz (THz) communications open a new frontier for the wireless network thanks to their dramatically wider available bandwidth compared current micro-wave and forthcoming millimeter-wave communications. However, due short length of THz waves, they also suffer from severe path attenuation poor diffraction. To compensate THz-induced propagation loss, this paper proposes combine two promising ...

The application of intelligent reflecting surface (IRS) depends on the knowledge channel state information (CSI), and has been hindered by heavy overhead training, estimation, feedback in fast-changing channels. This paper presents a new two-timescale beamforming approach to maximizing average achievable rate (AAR) IRS-assisted MIMO systems, where IRS is configured relatively infrequently based...

Physical layer secret key generation is a promising candidate to achieve one-time-pad encryption approach for the wireless communication system. However, in static environment, rate low due lack of channel time-variation. To solve this problem, letter proposes novel scheme assisted by an intelligent reflecting surface with discrete phase shifts. In scheme, legitimate nodes construct dynamic tim...

In this paper, we propose a downlink intelligent reflecting surface (IRS) aided non-orthogonal multiple access (NOMA) for millimeter-wave (mmWave) massive MIMO with lens antenna array, i.e., IRS-aided mmWave beamspace NOMA, where the single-antenna users without direct-link but connected to base station (BS) aid of IRS are grouped as one NOMA group. Considering power leakage problem in channel ...