| 单载波频域均衡在地空高速数据链的应用 |
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| 引用本文： | 桑会平.单载波频域均衡在地空高速数据链的应用[J].无线电工程,2009,39(7):53-55. |
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| 作者姓名： | 桑会平 |
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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： | 地空数据链的信道属于低仰角的多径信道,存在较严重的符号间干扰。正交频分复用(OFDM)是得到认可的有效抗多径方案,单载波频域均衡(SC-FDE)采用与OFDM相似的频域均衡方式,具有与OFDM相近的性能和复杂度,并克服了OFDM的一些不足。在比较SC-FDE和OFDM相似性、分析SC-FDE的信道估计与均衡基础上,提出了采用SC-FDE的地空高速数据链解调器结构,该结构在保留单载波处理的优点条件下实现高效的频域均衡。
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| 关 键 词： | 单载波频域均衡 正交频分复用 高速解调 信道估计 |
Single Carrier Frequency Domain Equalization Applied to High Rate Ground-to-air Data Link |
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| SANG Hui-ping.Single Carrier Frequency Domain Equalization Applied to High Rate Ground-to-air Data Link[J].Radio Engineering of China,2009,39(7):53-55. |
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| Authors: | SANG Hui-ping |
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| Affiliation: | SANG Hui-ping ( The 54th Research Institute of CETC, Shijiazhuang Hebei 050081, China) |
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| Abstract: | The ground-to-air data links are multipath channels which have severe intersymbol interference.Orthogonal frequency-division multiplex（OFDM） is a recognized solution to combat the effects of such multipath conditions.Single carrier frequency domain equalization（SC-FDE） frequency domain equalization has similar performance,efficiency,and low signal processing complexity advantages as OFDM.SC-FDE is similar to OFDM.The channel estimation and equalization for SC-FDE are analyzed.The high rate demodulator scheme with SC-FDE is proposed.This scheme implements frequency equalization with great efficiency and speed while the advantages of single carrier system are reserved. |
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| Keywords: | SC-FDE OFDM high rate demodulator channel estimation |
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