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User and intelligent reflecting surface pairing method and system for improving wireless transmission capacity

A wireless transmission and reflection surface technology, applied in wireless communication, electrical components, etc., can solve problems such as complex phase design of intelligent reflection surfaces, achieve the effect of improving wireless transmission capacity, reducing complexity, and improving pairing efficiency

Pending Publication Date: 2022-07-22
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the future wireless communication network, the application of smart reflectors is assumed to be deployed on a large scale in buildings and other public facilities, so how to pair smart reflectors with users becomes a problem to be solved; the existing research ideas are the same A smart reflector can serve multiple users at the same time, so the design of its phase shift matrix should take into account the information of multiple wireless channels at the same time, which will complicate the phase design of the smart reflector

Method used

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  • User and intelligent reflecting surface pairing method and system for improving wireless transmission capacity
  • User and intelligent reflecting surface pairing method and system for improving wireless transmission capacity
  • User and intelligent reflecting surface pairing method and system for improving wireless transmission capacity

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Embodiment 1

[0047] like figure 2 As shown, a system model of multi-user and multi-intelligent reflectors is established, including a base station (source node), multiple users (destination nodes) and multiple intelligent reflectors; all nodes in the system model can obtain all chains without error The source node will send the transmission signal to the destination node and the smart reflective surface, and the smart reflective surface will continuously control the phase of the cascaded link to keep it consistent with the direct link, improve the signal strength reaching the destination node, and thus improve the wireless transmission. Capacity; the link between the source node and each destination node is a direct link, and the link between the source node and each destination node through each intelligent reflective surface is a cascade link.

[0048]The source node sends signals in a time-division multiplexing manner, and all the above calculations are completed by the source node; mu...

Embodiment 2

[0102] An embodiment of the present invention provides a user-smart reflective surface pairing system for improving wireless transmission capacity, including:

[0103] Channel state information acquisition module: used to acquire the channel state information of the direct link between the source node and each destination node and the channel state information of the cascaded link between the source node and each destination node through each intelligent reflective surface;

[0104] Phase shift matrix calculation module: used to calculate the phase shift matrix of the smart reflector according to the channel state information of the direct link and the cascade link;

[0105] Channel capacity calculation module: It is used to calculate the channel capacity of the total link between the source node and each destination node with the assistance of each smart reflector based on the channel state information of the direct link and the cascade link and the phase shift matrix of the s...

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Abstract

The invention discloses a user and intelligent reflecting surface pairing method and system for improving wireless transmission capacity, and belongs to the technical field of wireless communication, and the method comprises the steps: obtaining the channel state information of a direct link between a source node and each destination node and the channel state information of a cascade link between the source node and each destination node through each intelligent reflecting surface; calculating a phase shift matrix of the intelligent reflecting surface according to the channel state information of the direct link and the cascade link; calculating the channel capacity of a total link between the source node and each destination node under the assistance of each intelligent reflecting surface according to the channel state information of the direct link and the cascade link and the phase shift matrix of the intelligent reflecting surface; the maximum value of the channel capacity is screened out through a maximum value priority algorithm, the user corresponding to the maximum value and the intelligent reflecting surface are combined into a pairing result, and the sum of the maximum values corresponding to all the users is the wireless transmission capacity; compared with a traditional multi-user system and a single intelligent reflecting surface auxiliary multi-user system, the method provided by the invention has the advantages that the wireless transmission capacity is improved, and the complexity of intelligent reflecting surface phase design is reduced.

Description

technical field [0001] The invention relates to a method and system for pairing a user and an intelligent reflective surface for improving wireless transmission capacity, and belongs to the technical field of wireless communication. Background technique [0002] The smart reflective surface is a reflective surface composed of a large number of low-cost passive reflective elements, which has the characteristics of energy saving, flexible deployment and cheap materials; since each reflective unit can independently change the phase of the incident signal, so Smart reflectors can be used to assist wireless communication systems to improve system performance; in complex wireless communication networks, with the increasing shortage of spectrum resources, the quality of wireless communication services demanded by users continues to rise, and the promotion of green energy-saving communication, a new generation of wireless The development of communication requires more technical supp...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W72/044H04W72/53
Inventor 娄钰磊邹玉龙孟庆民李斌
Owner NANJING UNIV OF POSTS & TELECOMM