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http://hdl.handle.net/10397/107125
Title: | Cooperative double-IRS aided communication : beamforming design and power scaling | Authors: | Han, Y Zhang, S Duan, L Zhang, R |
Issue Date: | Aug-2020 | Source: | IEEE wireless communications letters, Aug. 2020, v. 9, no. 8, p. 1206-1210 | Abstract: | Intelligent reflecting surface (IRS) Is a promising technology to support high performance wireless communication. By adaptively configuring the reflection amplitude and/or phase of each passive reflecting element on It, the IRS can reshape the electromagnetic environment In favour of signal transmission. This letter advances the existing research by proposing and analyzing a double-IRS aided wireless communication system. Under the reasonable assumption that the reflection channel from IRS 1 to IRS 2 Is of rank 1 (e.g., line-of-sight channel), we propose a joint passive beamforming design for the two IRSs. Based on this, we show that deploying two cooperative IRSs with In total K elements can yield a power gain of order O(K4) , which greatly outperforms the case of deploying one traditional IRS with a power gain of order O(K2). Our simulation results validate that the performance of deploying two cooperative IRSs Is significantly better than that of deploying one IRS given a sufficient total number of IRS elements. We also extend our line-of-sight channel model to show how different channel models affect the performance of the double-IRS aided wireless communication system. | Keywords: | Channel modelling Intelligent reflecting surface Passive beamforming Power scaling |
Publisher: | Institute of Electrical and Electronics Engineers | Journal: | IEEE wireless communications letters | ISSN: | 2162-2337 | EISSN: | 2162-2345 | DOI: | 10.1109/LWC.2020.2986290 | Rights: | © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The following publication Y. Han, S. Zhang, L. Duan and R. Zhang, "Cooperative Double-IRS Aided Communication: Beamforming Design and Power Scaling," in IEEE Wireless Communications Letters, vol. 9, no. 8, pp. 1206-1210, Aug. 2020 is available at https://doi.org/10.1109/LWC.2020.2986290. |
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