Beam forming optimization method of online NOMA multi-antenna system based on Lyapunov theory

A multi-antenna system, beamforming technology, applied in diversity/multi-antenna system, radio transmission system, transmission system, etc., can solve problems such as impairing the communication performance of weak users

Active Publication Date: 2018-06-19
SUN YAT SEN UNIV
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This situation will greatly damage the communication performance of weak users (that is, users far away from the sender). Therefore, corresponding measures suc

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
  • Beam forming optimization method of online NOMA multi-antenna system based on Lyapunov theory
  • Beam forming optimization method of online NOMA multi-antenna system based on Lyapunov theory
  • Beam forming optimization method of online NOMA multi-antenna system based on Lyapunov theory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) System model

[0058] Such as figure 1 As shown, the communication system model applicable to the present invention is composed of a multi-antenna base station and 2K single-antenna receiving users, and 2K users form K clusters through a clustering algorithm, and each cluster has 2 users, 1 strong user and 1 Weak users and strong users have buffer queues to decode and store information of weak users and forward the information to weak users. Consider a time period with M moments, and each moment has K+1 time slices. The first time slice considers that the base station uses NOMA to send information, and the remaining K time slices are decoded and forwarded by K strong users to K clusters Weak users. Assuming that the base station can fully know the channel state information (Channel State Information, CSI) of the entire network system, the channel response from the base station to the strong user in the Kth cluster is expressed as h k，m , the channel response to t...

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 beam forming optimization method of an online NOMA multi-antenna system based on the Lyapunov theory. An online mode is considered, the data causality is solved via the Lyapunov theory, a long-term time average optimization problem is converted into an optimization problem of each moment, slack variables are imported by using a concave-convex optimization algorithm, multi-dimensional first-order Taylor expansion is performed to solve the non-convex problem of objective functions and constraints, and optimal beam forming and power allocation schemes at each moment are obtained through iteration.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, relates to a beamforming optimization method of an online NOMA multi-antenna system based on Lyapunov theory. Background technique [0002] In recent years, with the rapid development of mobile communications, spectrum resources have become more and more scarce. Facing the rapidly growing demand for mobile services, how to effectively improve the utilization of limited spectrum resources has become an urgent need for the fifth generation (5G) mobile communication system. One of the key problems to be solved. With the feature of effectively improving system capacity, Non-Orthogonal Multiple Access (NOMA) technology is widely considered to be a promising multiple access technology. The basic idea of ​​NOMA is to use power multiplexing technology to transmit in a non-orthogonal manner at the transmitting end, actively introduce interference information,...

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
IPC IPC(8): H04B7/0408H04B7/0426H04B7/06H04B7/08
CPCH04B7/0408H04B7/0426H04B7/0617H04B7/0632H04B7/0817Y02D30/70
Inventor 龚倩昀黄姗李全忠张旗秦家银
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap