| 基于高阶累积量的OFDM信道估计算法研究 |
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| 引用本文： | 郑健.基于高阶累积量的OFDM信道估计算法研究[J].机械与电子,2012(7):21-23,63. |
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| 作者姓名： | 郑健 |
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| 作者单位： | 遵义医学院医学信息工程系,贵州遵义,563000 |
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| 基金项目： | 贵州省科学技术基金，遵义医学院硕士启动金 |
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| 摘 要： | 基于高阶累积量与LS准则联合估计信道参数的思想,在数据相关条件下,提出采用加权最小二乘法进行信道估计.算法提升了LS算法信道估计的精度,降低了信道估计算法的复杂度.仿真结果表明,该算法性能接近于传统MMSE和ML算法性能.
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| 关 键 词： | OFDM 加权最小二乘法 高阶累积量 LS准则 MMSE准则 ML准则 |
Channel Estimation Algorithm Based on Higher Order Cumulants in OFDM Systems |
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| ZHENG Jian.Channel Estimation Algorithm Based on Higher Order Cumulants in OFDM Systems[J].Machinery & Electronics,2012(7):21-23,63. |
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| Authors: | ZHENG Jian |
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| Affiliation: | ZHENG Jian (Department of Medical Information Engineering, Zunyi Medical College, Zunyi 563000,China) |
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| Abstract: | A new channel estimation algorithm is proposed based on higher order cumulants in OFDM systems.The MMSE and ML are significantly higher than LS in the computational complexity and the higher order sumulants can be completely eliminated the white Gaussian noise.So,a joint algorithm,higher order sumulants and LS,was presented in OFDM system.The results of simulation show that this new algorithm increase the channel estimation quality based on LS. |
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| Keywords: | OFDM WLS hider order cumulants LS MMSE ML |
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