Power adjustment method and base station of orthogonal frequency division multiplexing (OFDM) system

A technology of orthogonal frequency division and power adjustment, applied in the field of downlink power adjustment method and base station, can solve the problems of lack of flexibility, sacrificing cell throughput rate, unable to fully release redundant power cell throughput capacity, etc. The effect of reducing the level of inter-cell interference

Active Publication Date: 2011-03-23
ZTE CORP
View PDF4 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method lacks flexibility. Although it is simple and easy to implement and reduces inter-cell interference to a certain extent, it cannot

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
  • Power adjustment method and base station of orthogonal frequency division multiplexing (OFDM) system
  • Power adjustment method and base station of orthogonal frequency division multiplexing (OFDM) system
  • Power adjustment method and base station of orthogonal frequency division multiplexing (OFDM) system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0059] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0060] Aiming at the problems that the existing OFDM system usually adopts power allocation strategies such as sub-carriers, which cannot fully release the redundant power that causes interference and give full play to the cell throughput, it provides a power control that can effectively solve the downlink interference of the OFDM system. A power adjustment method and a base station for an orthogonal frequency division multiplexing system that can fully release power redundancy, give full play to the throughput capacity of a cell, and are easy to implement.

[0061] Such as figure 1 As shown, the power adjustment method of the orthogonal frequency division multiplexing system in the embodiment of the present invention includes:

[0062] Step...

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 power adjustment method and a base station of an orthogonal frequency division multiplexing (OFDM) system. The method comprises the following steps of: acquiring downlink channel quality information by the base station, and acquiring the grade of a modulation coding scheme according to the downlink channel quality information; acquiring downlink transmission quality information by the base station, and acquiring current power redundancy according to the downlink transmission quality information; and adjusting current power by the base station in accordance with a preset power adjustment quantity according to the current power redundancy and/or adjusting the grade of the modulation coding scheme according to a preset modulation coding scheme grade. The invention effectively solves the problem of power adjustment of downlink interference of the OFDM system and can sufficiently release the power redundancy and sufficiently perform the throughput capacity of a cell.

Description

technical field [0001] The present invention relates to the technical field of power control and interference coordination of a wireless communication system, in particular to a downlink power adjustment method and a base station suitable for an Orthogonal Frequency Division Multiplexing (OFDM) system. Background technique [0002] As a symbol of a new generation of wireless communication technology, OFDM has shown its strong advantages in the development of wireless communication systems and has been adopted by various standards. The main technical advantages of the OFDM system are high spectrum efficiency, strong bandwidth expansion, strong anti-multipath fading ability, convenient allocation of spectrum resources, and easy implementation of MIMO (Multiple-Input Multiple-Output, multiple-input multiple-output or spatial diversity) technology etc. [0003] Like the traditional wireless cellular network, the OFDM system also improves spectrum utilization by reducing the fre...

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): H04W52/24H04L1/00
CPCH04L1/0026H04L1/0009H04W52/42Y02B60/50H04L1/0003H04L27/2626
Inventor 赵刚曾召华秦洪峰周晖
Owner ZTE CORP
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