| 一种新的适用于高阶QAM系统的均衡算法 |
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| 引用本文： | 邵怀宗,吴颖.一种新的适用于高阶QAM系统的均衡算法[J].电波科学学报,2009,24(5). |
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| 作者姓名： | 邵怀宗 吴颖 |
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| 作者单位： | 电子科技大学通信与信息工程学院,四川,成都,610054 |
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| 摘 要： | 均衡嚣是通信信号解调的必要部分,对系统性能有较大的影响.针对高阶QAM信号,提出了一种新的判决反馈自适应均衡算法,该均衡器的系数为实数,便于算法的实现.当使用训练序列时,该算法不仅可以消除传输系统的符号间干扰,还可以纠正小的载波频偏.与文献4]中的均衡算法相比,提出的算法具有低的稳态误差.当应用于可等效为加性高斯噪声信道的视距传输时,该算法可以进行盲均衡处理来纠正较小的载波频偏,且收敛速度很快.理论分析和仿真结果证明了该算法的有效性.
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| 关 键 词： | QAM信号 均衡算法 盲均衡 判决反馈 |
A novel equalization algorithm for high-order QAM system |
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| SHAO Huai-zong WU Ying.A novel equalization algorithm for high-order QAM system[J].Chinese Journal of Radio Science,2009,24(5). |
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| Authors: | SHAO Huai-zong WU Ying |
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| Affiliation: | SHAO Huai-zong WU Ying(School of Communication , Information Engineering of UESTC,Chengdu Sichuan 610054,China) |
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| Abstract: | Equalizer,which can affect the whole system performance,is the necessary part of communication receiver.In this paper,a novel blind adaptive decision-feedback equalization algorithm is proposed,which can be used in high-order QAM system.The coefficients of the proposed equalizer are real so that it can be realized in engineering.The proposed algorithm can not only cancel the inter-symbol interference but also rectify the small frequency offset when the training signal is used,and its steady-state mean squar... |
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| Keywords: | QAM signal equalization algorithm blind equalization decision feedback |
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