Intelligent reflecting surface robust beam forming method and system

A technology of beamforming and reflecting surfaces, applied in the field of robust beamforming methods and systems of intelligent reflecting surfaces, capable of solving problems such as the influence of wireless communication systems

Active Publication Date: 2021-02-26
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a smart reflector robust beamforming method and system t

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  • Intelligent reflecting surface robust beam forming method and system
  • Intelligent reflecting surface robust beam forming method and system
  • Intelligent reflecting surface robust beam forming method and system

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Embodiment Construction

[0042] Embodiments of the present invention provide a method and a system for robust beamforming on an intelligent reflector to solve the impact of channel uncertainty conditions on a wireless communication system.

[0043] attached figure 2 Preferred embodiments of the present invention are given in , however, the invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one...

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Abstract

The invention provides an intelligent reflector robust beam forming method and system, and the method comprises the steps: building an uncertainty model of a channel based on the estimation error of an uncertainty channel; constructing a power budget constraint of the intelligent reflecting surface and a signal-to-noise ratio constraint of the receiver according to the uncertainty model, and constructing a beam forming optimization model of an uncertainty channel; and solving the beamforming optimization model according to an iterative algorithm, and jointly optimizing the active beamforming of the base station and the reflection coefficient of the intelligent reflecting surface to minimize the transmitting power of the base station. Based on the channel estimation error, the signal-to-noise ratio requirement of the most uncertain state of the receiver and the power budget constraint under the worst condition of the intelligent reflecting surface are considered, a robust beamforming optimization model is established, the optimization model is solved by using an iterative algorithm, active beamforming and IRS reflection coefficients are jointly optimized, and the optimal beamformingis realized. The transmission power of a multiple-input single-output (MISO) system is minimized.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a robust beamforming method and system for an intelligent reflector. Background technique [0002] The upcoming fifth-generation (5G) wireless network has achieved the goal of a 1,000-fold increase in network capacity and universal wireless connectivity of at least 100 billion devices. However, the required high complexity and hardware cost and increased energy consumption in complex and uncertain environments still need to be solved urgently. Therefore, it is of great significance to study how to find innovative, energy-efficient and cost-effective solutions for wireless networks. 5G physical layer technologies are generally able to adapt to spatially and temporally varying wireless environments, but signal propagation is inherently random and largely uncontrollable. Based on the above reasons, intelligent reflective surfaces (IRS) are considered as a promising ...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/0426H04B7/0408H04B7/026H04W52/14H04W52/42
CPCH04B7/0617H04B7/0408H04B7/043H04B7/026H04W52/143H04W52/42H04B7/04013
Inventor 陈希雨邓永昌林嘉烨谭源正龚世民
Owner SUN YAT SEN UNIV
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