Unlock instant, AI-driven research and patent intelligence for your innovation.

A Parameter Adjustment Method in Mimo Intelligent Reflector Transmission System

A parameter adjustment and transmission system technology, applied in the transmission system, radio transmission system, electrical components, etc., can solve the problems of not considering the influence of flow number performance and less research in multi-cell scenarios, and achieve the effect of high attainable rate

Active Publication Date: 2022-08-02
SOUTHEAST UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a parameter adjustment method in a MIMO intelligent reflective surface transmission system to solve the problem of joint optimization of precoding and phase shift angle in the prior art, and to model and solve the problem under a fixed number of streams Yes, the performance impact brought by the number of flows is not considered, and there are few technical issues in the multi-cell scenario.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Parameter Adjustment Method in Mimo Intelligent Reflector Transmission System
  • A Parameter Adjustment Method in Mimo Intelligent Reflector Transmission System
  • A Parameter Adjustment Method in Mimo Intelligent Reflector Transmission System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0089] In order to better understand the purpose, structure and function of the present invention, a parameter adjustment method in a MIMO intelligent reflective surface transmission system of the present invention will be described in further detail below with reference to the accompanying drawings.

[0090] like figure 1 As shown, BS i represents the base station of the i-th cell, User K represents the K-th user in the cell, and the specific parameters given in the present invention are as follows: the number of cells M=2, the number of users in each cell K=5, the number of users in each cell The number of receiving antennas N for each user r = 4, the number of smart reflector reflection units M = 20, the base station transmit power P l,max =1W, the channel noise variance σ 2 =-174dBm, training interval J=5, parameter assignment interval T=10.

[0091] In the base station measurement, the base station of the lth cell pairs the signal s sent to the kth user of the lth cell...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a parameter adjustment method in a MIMO intelligent reflective surface transmission system. The method firstly establishes a total achievable rate maximization model, then converts the model into an equivalent optimization model, and then splits it into two sub-models, namely the precoding and phase-shift angle models and the flow number optimization model. ; For the flow number optimization model, the multi-agent DQN learning method is used to obtain the flow number; for the precoding and phase shift angle models, combined with the flow number, an iterative method is used to solve, and in the iterative process, the precoding matrix is ​​updated with the KKT condition , and use the MM algorithm to update the phase shift angle. By adopting the method of the present invention, under the same transmission power and the number of intelligent reflection surface (RIS) reflection units, a larger total reachable rate is obtained.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a parameter adjustment method in a MIMO intelligent reflective surface transmission system. Background technique [0002] At present, most of the existing research on the parameter adjustment method in the MIMO intelligent reflector transmission system is aimed at the joint optimization of precoding and phase shift angle, and the problem is modeled and solved under a fixed number of streams, without considering the stream. The performance impact brought by the number of data, and the research on the multi-cell scenario is also less. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a parameter adjustment method in a MIMO intelligent reflective surface transmission system, so as to solve the problem that the prior art is the joint optimization of precoding and phase shift angle, and the modeling and solution of the pr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/0456
CPCH04B7/0413H04B7/0456
Inventor 陈明范鸣
Owner SOUTHEAST UNIV