Multipoint coordinated beam forming and power allocation method for single base station power constraint

A power-constrained, coordinated multi-point technology, used in power management, space transmit diversity, diversity/multi-antenna systems, etc.

Active Publication Date: 2012-02-15
SOUTHEAST UNIV
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the design of multi-point cooperative beamforming and power allocation methods mainly focuses on the problem of how to design beam vectors and power allocation between cooperative base stations under the total power c

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
  • Multipoint coordinated beam forming and power allocation method for single base station power constraint
  • Multipoint coordinated beam forming and power allocation method for single base station power constraint
  • Multipoint coordinated beam forming and power allocation method for single base station power constraint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0070] A method for multi-point cooperative beamforming and power allocation with single base station power constraints of the present invention comprises the following steps:

[0071] 1). Define the noise variance of the virtual uplink initial assignment of ε is an arbitrarily small positive number; defines the auxiliary variable t of the virtual uplink (n) initial assignment of t (0) = 0;

[0072] i is the base station number; for υ i (n) is the noise variance of the virtual uplink base station i; K is the number of cooperative base stations; n is the number of iterations of the noise variance of the virtual uplink, and the initial value is 0;

[0073] 2). Return the number of iterations m of the virtual uplink transmission power to zero, and initialize the virtual uplink transmission power Get the initial assignment of the transmit power

[0074] for lambda k (m) is the transmit power of virtual uplink user k;

[0075] k is the user number;

[0076] ...

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 discloses a multipoint coordinated beam forming and power allocation method for single base station power constraint. The method comprises the following steps of: firstly, transforming a multi-cell coordinated downlink minimum user signal-to-noise ratio maximization problem under the single base station power constraint into a virtual uplink optimization problem through a Lagrange duality theory; then, iteratively solving the virtual uplink optimization problem through a binary optimization method and a geometric programming optimization method, and obtaining an optimal receiving beam vector and an optimal user transmitting power of the virtual uplink; and finally, converting the solution of the virtual uplink to an optimized beam forming vector and the transmitting power of the downlink according to the duality theory. In comparison with the existing multipoint coordinated beam forming method, the method provided by the invention has obvious advantages in the aspect of speed per energy consumption and worst user speed performance, and with the method, the transmitting power can be saved by 25-30% at each base station and the impartiality among the users can be ensured.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a multi-point cooperative beamforming and power allocation method under the power constraint of a single base station. Background technique [0002] In order to improve the utilization efficiency of the spectrum, the cellular mobile communication system generally adopts the spectrum multiplexing method with a spectrum reuse factor of 1 to construct the communication network, which not only realizes the increase of the spectrum utilization efficiency, but also alleviates the pressure of the cell planning and the placement of the base station nodes. However, the cellular mobile network constructed by this method produces serious inter-cell interference, especially the impact of co-channel interference on cell edge users is more serious, which leads to a serious impact on the throughput performance of the cellular mobile communication system network. Recen...

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): H04B7/06H04W52/24H04W52/36
Inventor 黄永明何世文杨绿溪
Owner SOUTHEAST 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