Adaptive Power Allocation for ZF/MMSE Detected MIMO Systems

XU Wei; ZHAO Chun-ming; SHI Zhi-hua; ZHOU Peng

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Adaptive Power Allocation for ZF/MMSE Detected MIMO Systems

更新时间：2025-07-16

- Adaptive Power Allocation for ZF/MMSE Detected MIMO Systems
- Acta Electronica Sinica Vol. 36, Issue 10, Pages: 1891-1896(2008)
- 作者机构：
  
  东南大学移动通信国家重点实验室,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.5
- Published：2008
- 稿件说明：
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XU Wei, ZHAO Chun-ming, SHI Zhi-hua, et al. Adaptive Power Allocation for ZF/MMSE Detected MIMO Systems[J]. Acta Electronica Sinica, 2008, 36(10): 1891-1896.
DOI：

XU Wei, ZHAO Chun-ming, SHI Zhi-hua, et al. Adaptive Power Allocation for ZF/MMSE Detected MIMO Systems[J]. Acta Electronica Sinica, 2008, 36(10): 1891-1896. DOI：

摘要

本文研究了MIMO系统中的功率分配技术.针对基于ZF/MMSE检测的MIMO系统

提出了一种简单的自适应功率分配方案.该方案在不使用预编码技术对MIMO信道进行对角化的前提下

遵循最小化系统BER的准则

为发送数据流分配发射功率.与采用SVD预编码的功率分配方案相比

本文提出的方法减少了系统需要的反馈信息量.仿真表明该方法能够有效地提高系统的BER性能

而且基于MMSE检测的系统性能接近于采用SVD预编码的功率分配性能.

Abstract

This paper investigates the power allocation schemes for MIMO systems.An effective power allocation method for ZF/MMSE detected MIMO systems is then proposed.The method is designed to minimize the overall systems BER performance without pre-diagnalizing the MIMO channels using precoding.Compared with conventional power allocation schemes using SVD

the proposed method reduces the required feedback information.Simulation results show that this method effectively improves the BER performance.Moreover

the performance of this new method is also close to that of conventional precoded MIMO systems.

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