Kezhi Wang

TL;DR: This paper proposes to invoke an IRS at the cell boundary of multiple cells to assist the downlink transmission to cell-edge users, whilst mitigating the inter-cell interference, which is a crucial issue in multicell communication systems.

TL;DR: An intelligent reflecting surface (IRS) is invoked for enhancing the energy harvesting performance of a simultaneous wireless information and power transfer (SWIPT) aided system and the proposed BCD algorithm converges rapidly, which is appealing for practical applications.

TL;DR: In this article, the authors aim to answer four fundmental questions: 1) Why do we need RISs? 2) What is an RIS? 3] What are RIS's applications? 4) What are the relevant challenges and future research directions?

TL;DR: In this paper, the robust beamforming based on the imperfect cascaded BS-IRS-user channels at the transmitter was studied, where the transmit power minimization problems were formulated subject to the worst-case rate constraints under the bounded CSI error model, and the rate outage probability constraint under the statistical CSI estimation model, respectively.

TL;DR: In this paper, an intelligent reflecting surface (IRS) is invoked for enhancing the energy harvesting performance of a simultaneous wireless information and power transfer (SWIPT) aided system, where a multiantenna aided base station (BS) communicates with several multi-antenna assisted information receivers (IRs), while guaranteeing the EE requirement of the energy receivers (ERs).