| 基于VCC-DDEA算法的短波信道均衡 |
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| 引用本文： | 田伟,周新力,吴建刚,孟庆萍. 基于VCC-DDEA算法的短波信道均衡[J]. 北京邮电大学学报, 2012, 35(2): 104-107 |
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| 作者姓名： | 田伟 周新力 吴建刚 孟庆萍 |
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| 作者单位： | 海军航空工程学院训练部,山东烟台,264001;海军航空工程学院电子信息工程系,山东烟台,264001;海军驻三江航天集团军事代表室,湖北孝感,432000 |
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| 摘 要： | 为了改善窄带短波单音串行数据通信的误码率性能,提出了时变信道系数数据引导均衡算法(VCC-DDEA).采用自适应跟踪算法估计每个码符号采样时刻的信道系数,消除由训练序列在相应时刻引入的码间干扰,并基于误差平方和最小(LSSE)准则估计用户数据.仿真结果表明,相对于DDEA,VCC-DDEA突破了1帧数据范围内信道系数恒定的要求,性能显著提高.
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| 关 键 词： | 窄带短波信道 数据引导均衡算法 矩阵LU分解 |
| 收稿时间： | 2011-06-22 |
HF Channel Equalization Based on VCC-DDEA |
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| TIAN Wei , ZHOU Xin-li , WU Jian-gang , MENG Qin-ping. HF Channel Equalization Based on VCC-DDEA[J]. Journal of Beijing University of Posts and Telecommunications, 2012, 35(2): 104-107 |
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| Authors: | TIAN Wei ZHOU Xin-li WU Jian-gang MENG Qin-ping |
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| Affiliation: | 1Department of Training, Navy Aeronautical Engineering Institute, Shandong Yantai 264001, China; 2Department of Electronic and Information Engineering, Navy Aeronautical Engineering Institute, Shandong Yantai 264001, China; 3Navy Military Representative Office in Sanjiang Space Group, Hubei Xiaogan 432000, China |
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| Abstract: | A time-varying channel coefficients of data-directed equalization algorithm(VCC-DDEA) is proposed for single tone narrow-band high frequency communication.The channel coefficient is estimated at each symbol sampling time based on adaptive tracking algorithm.The inter-symbol interface caused by training sequences is eliminated,then the user data is estimated as well based on least sum square error(LSSE) criterion.The demand that the channel coefficients being constant for DDEA in the frame is broken through VCC-DDEA and a conspicuous performance improvement is obtained. |
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| Keywords: | narrow-band high frequency channel data-directed equalization algorithm matrix LU decomposition |
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