| Performance of a novel carrier frequency offset estimation algorithm for OFDM-based WLANs |
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| 作者姓名： | 赵忠伟 |
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| 作者单位： | Institute of |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (No. 2004012F33AA), and Education Foundation of Zhe- jiang Education Department (No. 20040125-66), China |
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| 摘 要： | INTRODUCTION Orthogonal frequency division multiplexing (OFDM) has been treated as the key transmission method in Wireless Local Area Networks (WLANs) based on IEEE802.11a protocol (IEEE Standard 802.11a- 1999). However, the sensitivity of the scheme to the frequency offset limits its development. Moose (1994) proposed maximum likelihood esti-mation for the carrier frequency offset by using two different received symbols, but the limitation of this method is that the acquisition r…
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| 关 键 词： | 无线局域网 正交频分复用 载波频率估计算法 网络性能 |
| 收稿时间： | 2005-02-10 |
| 修稿时间： | 2005-10-13 |
Performance of a novel carrier frequency offset estimation algorithm for OFDM-based WLANs |
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| Zhong-wei Zhao.Performance of a novel carrier frequency offset estimation algorithm for OFDM-based WLANs[J].Journal of Zhejiang University Science,2006,7(3):321-325. |
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| Authors: | Zhong-wei Zhao |
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| Institution: | (1) Institute of Wireless Communications and Network, Department of Information and Electronic Engineering, Zhejiang Gongshang University, Hangzhou, 310035, China |
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| Abstract: | This paper presents a novel carrier frequency offset estimation (CFO) algorithm for orthogonal frequency division multiplexing (OFDM)-based Wireless Local Area Networks (WLANs). Compared with previous approaches, this paper extends the whole frequency offset acquisition range by embedding a synthetic algorithm according to the preamble structure of WLANs symbols. The numerical results presented support the effectiveness of this algorithm by which the estimation error of the whole carrier frequency offset in the WLANs is effectively decreased. |
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| Keywords: | Carrier frequency OFDM WLANs Preamble structure Acquisition |
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