MISO wireless communication systems via intelligent reflecting surfaces

Yu X, Xu D, Schober R (2019)

Publication Type: Conference contribution

Publication year: 2019

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 735-740

Conference Proceedings Title: 2019 IEEE/CIC International Conference on Communications in China, ICCC 2019

Event location: Changchun CN

ISBN: 9781728107325

DOI: 10.1109/ICCChina.2019.8855810

Abstract

Intelligent reflecting surfaces (IRSs) have received considerable attention from the wireless communications research community recently. In particular, as low-cost passive devices, IRSs enable the control of the wireless propagation environment, which is not possible in conventional wireless networks. To take full advantage of such IRS-assisted communication systems, both the beamformer at the access point (AP) and the phase shifts at the IRS need to be optimally designed. However, thus far, the optimal design is not well understood. In this paper, a point-to-point IRS-assisted multiple-input single-output (MISO) communication system is investigated. The beamformer at the AP and the IRS phase shifts are jointly optimized to maximize the spectral efficiency. Two efficient algorithms exploiting fixed point iteration and manifold optimization techniques, respectively, are developed for solving the resulting non-convex optimization problem. The proposed algorithms not only achieve a higher spectral efficiency but also lead to a lower computational complexity than the state-of-the-art approach. Simulation results reveal that deploying large-scale IRSs in wireless systems is more efficient than increasing the antenna array size at the AP for enhancing both the spectral and the energy efficiency.

Authors with CRIS profile

Xianghao Yu Professur für Informationsübertragung Dongfang Xu Lehrstuhl für Digitale Übertragung Robert Schober Lehrstuhl für Digitale Übertragung

How to cite

APA:

Yu, X., Xu, D., & Schober, R. (2019). MISO wireless communication systems via intelligent reflecting surfaces. In 2019 IEEE/CIC International Conference on Communications in China, ICCC 2019 (pp. 735-740). Changchun, CN: Institute of Electrical and Electronics Engineers Inc..

MLA:

Yu, Xianghao, Dongfang Xu, and Robert Schober. "MISO wireless communication systems via intelligent reflecting surfaces." Proceedings of the 2019 IEEE/CIC International Conference on Communications in China, ICCC 2019, Changchun Institute of Electrical and Electronics Engineers Inc., 2019. 735-740.

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