Green communication method based on reconfigurable intelligent reflecting surface

A green communication, reflective surface technology, applied in wireless communication, sustainable communication technology, energy reduction and other directions, to achieve the effect of improving effective utilization, reducing mutual interference, and improving transmission efficiency

Inactive Publication Date: 2020-09-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the number of environmental objects may exceed the number of antennas on endpoint radios, which means that the options available for system optimization may exceed the number of current wireless network deployments

Method used

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  • Green communication method based on reconfigurable intelligent reflecting surface
  • Green communication method based on reconfigurable intelligent reflecting surface
  • Green communication method based on reconfigurable intelligent reflecting surface

Examples

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and example, describe technical scheme of the present invention in detail:

[0036] In this example, consider in a RIS-aided communication network with a two-dimensional distribution model, where BS and RIS are located at coordinates (0,0)m and (D,50)m, respectively. A BS equipped with 4 antennas serves 4 single-antenna users randomly distributed in a special area, ie a circle with a radius of 10m centered at (200,0)m. Throughout the simulations, unless otherwise stated, the transmission bandwidth was set to 180kHz, and the noise power spectral density was -174dBm / Hz. In the simulations, perfect channel estimation at the BS and RIS and the use of ZF transmission techniques are assumed in order to include the effects of fading and shadowing. In this section, simulations are performed to compare the performance of the proposed iterative method in a multi-user MISO system and compare it with two baselines denoted as Random Ph...

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Abstract

The invention belongs to the technical field of communication performance optimization under a reconfigurable intelligent reflecting surface, and particularly relates to a green communication method based on the reconfigurable intelligent reflecting surface. The invention relates to theoretical frameworks of green communication, reconfigurable intelligent reflecting surfaces, MISO system communication and the like. The present invention studies spectral efficiency (SE) in a reconfigurable smart surface (RIS) assisted multi-user multiple-input single-output (MISO) system, wherein the RIS can reconstruct the propagation environment through a large number of controllable smart phase shifters. Power distribution of a BS (Base Station) and phase shift of an RIS (Radio Information System) are considered together on the basis of considering the fairness of the nonlinear proportionality rate to maximize SE constraints so as to realize reasonable resource distribution. Generally, the reconfigurable intelligent reflecting surface communication method under the MISO system with the constrained proportional rate is a green communication method, and the user performance can be optimized while the network load of the system is reduced.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a green communication method based on a reconfigurable intelligent reflective surface. Background technique [0002] Green Communications (Green Communications) refers to a new generation of communication concepts for energy saving and emission reduction, environmental pollution reduction, resource waste and harm to human body and environment. The flexible site scene model achieves the purpose of reducing energy consumption by actively transforming the base station or making it more environmentally friendly, and finally realizes the harmonious coexistence between man and nature and sustainable development. With the development of the times, Green Pass will gradually replace the existing communication mode. [0003] Reconfigurable Smart Reflective Surface (RIS) refers to a reflective surface composed of a large number of low-cost reflective elements, wh...

Claims

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Application Information

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IPC IPC(8): H04B17/382H04B17/336H04B17/345H04B7/06H04B7/08H04W52/02
CPCH04B17/382H04B17/336H04B17/345H04B7/0617H04B7/086H04W52/0206Y02D30/70H04B7/04013
Inventor雍超肖悦李蓉高玉兰
OwnerUNIV OF ELECTRONICS SCI & TECH OF CHINA