An OFDM Adaptive Antenna Array Based on Beam-Space CSI Estimation

LIU Bo; JIN Rong-hong; FAN Yu; GENG Jun-ping

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An OFDM Adaptive Antenna Array Based on Beam-Space CSI Estimation

更新时间：2025-07-16

- An OFDM Adaptive Antenna Array Based on Beam-Space CSI Estimation
- Acta Electronica Sinica Vol. 33, Issue 3, Pages: 463-466(2005)
- 作者机构：
  
  区域光纤通信网与新型光通信系统国家重点实验室,上海交通大学,上海,200030
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN914.3
- Published：2005
- 稿件说明：
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LIU Bo, JIN Rong-hong, FAN Yu, et al. An OFDM Adaptive Antenna Array Based on Beam-Space CSI Estimation[J]. Acta Electronica Sinica, 2005, 33(3): 463-466.
DOI：

LIU Bo, JIN Rong-hong, FAN Yu, et al. An OFDM Adaptive Antenna Array Based on Beam-Space CSI Estimation[J]. Acta Electronica Sinica, 2005, 33(3): 463-466. DOI：

摘要

现有pre-FFT OFDM自适应天线系统中信道状态信息(CSI)估计在阵元空间进行

其性能易受干扰的影响而恶化

本文提出一种基于波束空间CSI估计的pre-FFT自适应天线阵方案

可显著提高CSI估计的精度和稳健性

仿真结果表明该方案较传统的阵元空间天线阵有明显的性能提升

特别在强干扰条件下

阵元空间阵列可能无法工作

而本文方案仍然具有良好的性能.

Abstract

In current pre-FFT OFDM (pre-Fast Fourier Transform Orthogonal Frequency-Division) adaptive antenna systems

the CSI (Channel Statement Information) estimation is made in the element-space and the performance may deteriorate due to its poor anti-jamming ability.An adaptive antenna scheme based on beam-space CSI estimation is proposed to improve the accuracy and robustness of the estimation.The simulation results show that a prominent performance improvement can be achieved.In environments with strong interferences

the proposed scheme still performs well

while the element-space scheme may fail to work.

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