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Distributed active and passive reciprocal transmission method assisted by intelligent reflecting surface

A transmission method and reflective surface technology, which can be used in phase-modulated carrier systems, radio relay systems, electrical components, etc., can solve the problems that restrict the development of active and passive reciprocal transmission technology assisted by intelligent reflective surfaces, and limit the application scenarios. Improve communication reliability, simplify hardware design, and realize the effect of spectrum sharing

Pending Publication Date: 2022-07-29
JINAN UNIVERSITY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing active-passive reciprocal transmission system assisted by intelligent reflective surfaces cannot meet the needs of active and passive information transmission to different destinations, and the application scenarios are limited, which seriously restricts the development of active-passive reciprocal transmission technology assisted by intelligent reflective surfaces

Method used

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  • Distributed active and passive reciprocal transmission method assisted by intelligent reflecting surface
  • Distributed active and passive reciprocal transmission method assisted by intelligent reflecting surface
  • Distributed active and passive reciprocal transmission method assisted by intelligent reflecting surface

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Embodiment Construction

[0051] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0052] like figure 1 As shown, this embodiment provides a distributed active-passive reciprocal transmission method assisted by an intelligent reflector, which is applied to a wireless communication system. The wireless communication system includes at least two signal sources, at least one base station, and at least one controlled intelligent reflector. face, at least one active user with a single antenna and at least one with N R passive users of the root antenna;

[0053] like figure 2 As shown, the application scenario of this embodiment includes a single-antenna base station, a sm...

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Abstract

The invention discloses a distributed active and passive reciprocal transmission method assisted by an intelligent reflecting surface. The method comprises the following steps: grouping reflecting units of the intelligent reflecting surface; a grouped reflection phase is configured, the base station modulates active information into a symbol s by adopting M-system phase modulation or amplitude-phase modulation and transmits the symbol s out, and the intelligent reflecting surface modulates passive information into a passive user receiving antenna index m; the active user adopts a maximum likelihood detection algorithm to demodulate active information, and the passive user adopts an incoherent greedy detection algorithm to demodulate passive information; active transmission and passive transmission are carried out at the same time, the active transmission adopts phase or amplitude-phase modulation to pass through a base station, active information is transmitted to an active user every time, the passive transmission shares electromagnetic waves of the active transmission and utilizes multiple antenna indexes of a passive user, and passive information is transmitted to a passive user every time. According to the invention, the requirement of transmitting active and passive information to different receivers can be met.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a distributed active-passive reciprocal transmission method assisted by an intelligent reflective surface. Background technique [0002] Smart reflective surfaces have become a new breakthrough in information transmission because they can reshape the wireless propagation environment through software programming. At present, the research on the application of smart reflective surfaces to wireless communication mainly focuses on three directions: first, the smart reflective surface is used as a signal reflector, and the data is completely from the radio frequency source. Control the wireless channel to achieve the goals of eliminating coverage holes, improving signal quality, and enhancing physical layer security; the second is to use the smart reflective surface directly as an information modulator. The third is to use the smart reflective surface as a signal refle...

Claims

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Application Information

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IPC IPC(8): H04B7/145H04W16/14H04L27/20
CPCH04B7/145H04W16/14H04L27/20
Inventor 李强白松蔡东洪赵山程温金明
Owner JINAN UNIVERSITY
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