多用户自适应调制及功率分配

您当前的位置：

首页 >

文章列表页 >

多用户自适应调制及功率分配

更新时间：2025-07-16

- 多用户自适应调制及功率分配
- Acta Electronica Sinica Vol. 31, Issue 2, Pages: 211-213(2003)
- 作者机构：
  
  1. 电子科技大学通信信息工程学院,四川,成都,610054
  2. 北京邮电大学信息工程学院,北京,100876
  3. 清华大学微波与数字通信国家重点实验,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN92
- Published：2003
- 稿件说明：
移动端阅览
[J]. Acta Electronica Sinica, 2003, 31(2): 211-213.
DOI：

[J]. Acta Electronica Sinica, 2003, 31(2): 211-213. DOI：

摘要

为了满足新一代无线通信系统的高数据速率、高频谱效率的通信要求

本文提出了基于正交频分复用(OFDM)技术的自适应调制、子载波分配及功率分配方法

它采用的多址方式是码分多址(CDMA).通过上行信道返馈获知下行信道参数

在一定服务质量要求(QoS)、一定传输速率下

通过本文的优化分配算法

使系统的频谱利率最高

所有子载波的发射功率之和最小.将本方法应用在下行同步信道环境下

系统具有较快的收敛速度;与非自适应OFDM比较

用户发射功率有较大降低

是一种工程可适用方案.

Abstract

To satisfy the request of high data rate and high frequency efficiency for new generation communication system

a method of adaptive modulation modes

subcarrier and power allocation is proposed for OFDM-DS/CDMA systems. With the downlink channel parameter acquired from uplink channel feedback

an optimization algorithm is utilized to maximize frequency efficiency and minimize the required transmitting power for a given QoS and data throughput.Compared with non-adaptive OFDM system

the required transmitting power is greatly decreased and the convergence rate of this algorithm is very high which makes it very appropriate for engineering application.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Precoding and Power Allocation Based on Double Codebook in MIMO Systems with Limited Feedback

An Adaptive Allocation Algorithm for Multiuser OFDM System over Frequency Selective Fading Channels

Coordinated Multipoint Based User Access and Power Allocation for Indoor VLC-NOMA Network

Diverse User Service Requirement-Oriented Dynamic Resource Allocation Algorithm for Multi-Beam Satellite Systems

Non-Orthogonal Ratio Control and Power Allocation Optimization Algorithm for Multi-User Full-Duplex Cooperative PNOMA Systems

Related Author

LIU Jian-guo

YANG Lu-xi

QIAN Xue-rong

YUE Dian-wu

ZHANG Li-jun

LIU Huan-lin

HU Yang

CHEN Yong

Related Institution

School of Information Science and Engineering, Southeast Univ.

Dept.of Telecom.Eng.,Nanjing University of Posts and Telecommunications

School of Communications and Information Engineering, Chongqing University of Posts and Telecommunications

School of Automation, Chongqing University of Posts and Telecommunications

School of Communications and Information Engineering， Chongqing University of Posts and Telecommunications

⁰