RIS assistance-based user data superposition communication system

A technology of communication system and user data, applied in the field of optical communication, can solve the problems of high complexity of wireless communication system, difficult to guarantee wireless communication effect, poor millimeter wave penetration ability, etc., achieve high beamforming gain and improve energy utilization efficiency , the effect of enhancing the applicability

Inactive Publication Date: 2021-02-02
HUAIHUA UNIV
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Problems solved by technology

[0002]There is an important problem in the field of 5G wireless communication: the millimeter wave penetration ability of its main band is poor, and it is easy to be blocked by obstacles. Without other means, indoor It is difficult to guarantee the effect of wireless communication in complex scenarios such as
However, key issues such as high complexity, high hardware cost, and high energy consumption of wireless communication systems have not been well resolved.

Method used

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  • RIS assistance-based user data superposition communication system
  • RIS assistance-based user data superposition communication system
  • RIS assistance-based user data superposition communication system

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] see figure 1 As shown, the present invention provides a communication system based on RIS-assisted user data superposition, including user 1, user 2, RIS, a controller, and a base station. After the signals of user 1 and user 2 are transmitted to the RIS, The controller superimposes the signal of user 2 on user 1 by adding a phase offset θ, and then transmits it to the base station through the channel of user 1, and the base station first decodes and se...

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Abstract

The invention discloses an RIS assistance-based user data superposition communication system which comprises a user 1, a user 2, an RIS, a controller and a base station. After signals of the user 1 and the user 2 are transmitted to the RIS, the controller superposes the signal of the user 2 on the user 1 by adding a phase offset theta, and transmits the superposed signal to the base station through a channel of the user 1; and the base station firstly decodes and separates the signals of the user 1 from the received signals, then decodes and obtains the signals of the user 2, and finally obtains the signals of the user 1 and the user 2. The system has the advantages that the system is used for superposing data needing to be transmitted by multiple users on the transmission channel of one user, so that the problem of channel congestion caused by ultra-dense networking can be well solved, and the RIS can effectively extend the transmission distance and the coverage capacity of the system.

Description

【Technical field】 [0001] The invention relates to the technical field of optical communication, in particular to a communication system based on RIS-assisted user data superposition. 【Background technique】 [0002] There is an important problem in the field of 5G wireless communication: the millimeter wave penetration ability of its main band is poor, and it is easy to be blocked by obstacles. Without other means, it is difficult to guarantee the effect of wireless communication in complex scenarios such as indoors. Previously, someone proposed an idea to solve this problem: design a passive, reflective, reconfigurable, and low-cost intelligent reflective surface (Reconfigurable Intelligent Surfaces / RIS, hereinafter all expressed as RIS) to assist wireless Communication, by placing and distributing at a suitable location, the signal can be controllably reflected to the desired phase position at the RIS, which is equivalent to adding an additional bypass channel to achieve ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02
CPCH04W28/0289
Inventor 陈生海
Owner HUAIHUA UNIV
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