A Novel Algorithm of Power Allocation and Adaptive Modulation for MIMO Systems over Time-Varying Fading Channel

HE Zhi-qiang; WANG Xiao-xiang; WU Wei-ling

您当前的位置：

首页 >

文章列表页 >

A Novel Algorithm of Power Allocation and Adaptive Modulation for MIMO Systems over Time-Varying Fading Channel

更新时间：2025-07-16

- A Novel Algorithm of Power Allocation and Adaptive Modulation for MIMO Systems over Time-Varying Fading Channel
- Acta Electronica Sinica Vol. 32, Issue 9, Pages: 1556-1559(2004)
- 作者机构：
  
  北京邮电大学信息工程学院181信箱,北京,100876
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.5
- Published Online：25 September 2004，
  
  Published：2004
- 稿件说明：
移动端阅览
HE Zhi-qiang, WANG Xiao-xiang, WU Wei-ling. A Novel Algorithm of Power Allocation and Adaptive Modulation for MIMO Systems over Time-Varying Fading Channel[J]. Acta Electronica Sinica, 2004, 32(9): 1556-1559.
DOI：

HE Zhi-qiang, WANG Xiao-xiang, WU Wei-ling. A Novel Algorithm of Power Allocation and Adaptive Modulation for MIMO Systems over Time-Varying Fading Channel[J]. Acta Electronica Sinica, 2004, 32(9): 1556-1559. DOI：

摘要

本文提出一种在时变衰落信道下

MIMO系统的功率分配和自适应调制方法.该方法采用空域注水定理

在发送端天线的平均功率受限的条件下

按照信道传输矩阵的奇异值对发端的多天线进行最优功率分配和自适应MQAM调制.本文从频谱效率方面对其性能进行分析.给出了信道估计的误差和反馈时延对该方法的影响.理论分析和仿真结果表明

该方法实现简单

且与传统的总功率受限的自适应调制方法相比

具有更高的频谱效率.

Abstract

A novel power allocation and adaptive modulation algorithm for MIMO systems over time-varying fading channel is proposed.Using water-filling theory in space domains

the optimal power allocation and adaptive MQAM by singular values of the channel transfer matrix with average transmit power constraint is obtained.The spectral efficiency is analysed.The effect of the channel estimation error and feedback delays on the algorithm is investigated.The theoretic analysis and simulation results show that the novel algorithm is robust and easy to implement

and the spectral efficiency of the algorithm is greater than that of early-proposed algorithm with total power constraint.

关键词

Keywords

references

Views

1138

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Spectral Efficiency Analysis of Distributed-RIS-Empowered Multi-User mmWave Massive MIMO Systems

Mixed⁃Resolution Phase Shifters⁃Based Precoding Design for the mmWave Massive MIMO Systems

Study on the MIMO System and Wireless Channel Capacity

Research of Optimum SNR Thresholds of AQAM System and Its Application in IEEE802.16e

Related Author

TANG Xi

LI Rui-feng

MA Pan-pan

LI Wen-hai

LI Guang-hui

LUO Jing

DING Qing-feng

GAO Xin-peng

Related Institution

Naval Aviation University

School of Electrical and Automation Engineering, East China Jiaotong University

College of Mathematics and Information ScienceNorthwest Normal UniversityLanzhou 730070China

Wireless Communication Key Lab of Jiangsu ProvinceNanjing University of Posts and TelecommunicationsNanjing 210003China

College of Mathematics and Information Science,Northwest Normal University

⁰