| 无人机宽带数据链信道均衡技术研究 |
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| 引用本文： | 王利平,桑会平.无人机宽带数据链信道均衡技术研究[J].无线电通信技术,2019(4):397-400. |
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| 作者姓名： | 王利平 桑会平 |
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| 作者单位： | 1.中国电子科技集团公司第五十四研究所 |
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| 摘 要： | 信道均衡技术是解决无人机宽带数据链码间干扰问题的关键技术之一。针对无人机宽带数据链的信道特点,在分析单载波频域均衡(SC-FDE)的基础上,提出一种时域、频域相结合的信道均衡方案,相比于SC-FDE,可以有效降低数据帧较长情况下均衡处理的整体实现复杂度。对该方案进行了仿真,结果表明,该方案可以有效抑制多径效应产生的码间干扰,具有很好的鲁棒性。基于FPGA数字信号处理平台进行了软件设计,验证了其工程应用的可行性。
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| 关 键 词： | 无人机 宽带数据链 信道估计 信道均衡 |
Research of Channel Equalization in UAV Broadband Data Link |
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| WANG Liping,SANG Huiping.Research of Channel Equalization in UAV Broadband Data Link[J].Radio Communications Technology,2019(4):397-400. |
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| Authors: | WANG Liping SANG Huiping |
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| Affiliation: | (The 54th Research institute of CETC,Shijiazhuang 050081,China) |
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| Abstract: | Channel equalization is one of the key technologies in the UAV broadband data link to reduce the inter-symbol interference(ISI).Based on the channel characteristics of UAV broadband data link and SC-FDE,a new channel equalization scheme was proposed based on the time domain and frequency domain processing.Compared with SC-FDE,the overall implementation complexity was reduced effectively when the length of data frame is longer.Computer simulation results show that the new channel equalization scheme could mitigate the ISI caused by multipath channel and provide robustness.At last,with FPGA as the digital signal processor,the design of software was implemented based on the feasibility of engineering application. |
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| Keywords: | UAV broadband data link channel estimation channel equalization |
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