| IEEE 802．11a中的载波频率估计技术 |
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| 引用本文： | 张晓明. IEEE 802．11a中的载波频率估计技术[J]. 计算机与网络, 2008, 34(16): 49-50 |
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| 作者姓名： | 张晓明 |
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| 作者单位： | 中国电子科技集团公司第五十四研究所,河北石家庄050081 |
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| 摘 要： | 本文设计了一种针对无线局域网IEEE802．11a系统的载波频率偏移的同步方法。802．11a结合了基于OFDM技术的传输体制并且可以提供最高能达到54Mbit／s的多种传榆速率。这种算法试图提供一种捕获以及跟踪阶段的载波频率偏差的估计以及补偿的方法。经过同步以及均衡的处理后，用误差向量的数量级来估计系统在AWGN以及多径衰落信道下的性能。经过仿真验证．这种算法在合理的复杂度之内有效的解决了载波频率偏差的问题。
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| 关 键 词： | OFDM 同步 无线局域网 频率跟踪 |
Carrier Frequency Estimation Technique for IEEE 802.11a |
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| ZHANG Xiao-ming. Carrier Frequency Estimation Technique for IEEE 802.11a[J]. China Computer & Network, 2008, 34(16): 49-50 |
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| Authors: | ZHANG Xiao-ming |
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| Affiliation: | ZHANG Xiao-ming (The 54th Research Institute of CETC,Shijiazhuang Hebei 050081,China) |
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| Abstract: | This paper describes a synchronization method for carrier frequency offset(CFO)in wireless LAN IEEE 802.11a system, which adopts OFDM-based transmission techniques and provides several different transmission data rates up to 54Mbit/s.The algorithm proposed provides an estimation and compensation method for CFO in acquisition and tracking stages.After the processes of synchro- nization and equalization,the error vector magnitude is used to evaluate the system's performance in both AWGN and multipath fading c... |
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| Keywords: | OFDM synchronization wireless LAN frequency tracking |
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