| 基于波束空间CSI估计的OFDM自适应天线 |
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| 引用本文： | 刘波,金荣洪,范瑜,耿军平.基于波束空间CSI估计的OFDM自适应天线[J].电子学报,2005,33(3):463-466. |
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| 作者姓名： | 刘波 金荣洪 范瑜 耿军平 |
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| 作者单位： | 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;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;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;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 |
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| 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.
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| 关 键 词： | OFDM 自适应天线阵 波束空间 CSI估计 |
| 文章编号： | 0372-2112(2005)03-0463-04 |
| 收稿时间： | 2004-02-27 |
An OFDM Adaptive Antenna Array Based on Beam-Space CSI Estimation |
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| LIU Bo,JIN Rong-hong,FAN Yu,GENG Jun-ping.An OFDM Adaptive Antenna Array Based on Beam-Space CSI Estimation[J].Acta Electronica Sinica,2005,33(3):463-466. |
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| Authors: | LIU Bo JIN Rong-hong FAN Yu GENG Jun-ping |
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| Affiliation: | 1.State Key Lab of Advanced Optical Communication Systems and Networks,Shanghai Jiao Tong University,Shanghai 200030,China |
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| Abstract: | In current pre-FFT OFDM (pre-Fast Fourier Transform Orthogonal Frequency-Divi sion) adaptive antenna systems,the CSI (Channel Statement Information) estimatio n is made in the element-space and the performance may deteriorate due to its p oor anti-jamming ability.An adaptive antenna scheme based on beam-space CSI es timation is proposed to improve the accuracy and robustness of the estimation.Th e simulation results show that a prominent performance improvement can be achiev ed.In environments with strong interferences,the proposed scheme still performs well,while the element-space scheme may fail to work. |
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| Keywords: | OFDM |
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