| 最小平方OFDM信道估计与信号检测的联合迭代算法 |
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| 引用本文： | 苏鹏程,孙军,乔艳涛,钱团结.最小平方OFDM信道估计与信号检测的联合迭代算法[J].上海交通大学学报,2004,38(Z1):39-42. |
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| 作者姓名： | 苏鹏程 孙军 乔艳涛 钱团结 |
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| 作者单位： | 上海交通大学,图像通信与信息处理研究所,上海,200030 |
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| 摘 要： | 提出一种基于正交频分复用(OFDM)的联合最小平方(LS)信道估计与信号检测迭代算法.与一般的LS信道估计相比,该算法可大大提高估计的精度,而且通过时域低通滤波可有效地抑制加性白高斯噪声(AWGN)和载波间干扰(ICI)的影响,使OFDM系统在移动条件下很好地工作,并能给出很精确的信号检测结果.仿真结果表明,该算法具有很好的均方误差和误比特率性能.
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| 关 键 词： | 正交频分复用 信道估计 信号检测 迭代算法 |
| 文章编号： | 1006-2467(2004)S0-0039-04 |
| 修稿时间： | 2003年11月9日 |
An Iterative Algorithm of Joint Least-Squares Channel Estimation and Signal Detection for OFDM Systems |
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| SU Peng-cheng,SUN Jun,QIAO Yan-tao,QIAN Tuan-jie.An Iterative Algorithm of Joint Least-Squares Channel Estimation and Signal Detection for OFDM Systems[J].Journal of Shanghai Jiaotong University,2004,38(Z1):39-42. |
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| Authors: | SU Peng-cheng SUN Jun QIAO Yan-tao QIAN Tuan-jie |
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| Abstract: | Compared with the common least-squares(LS) channel estimation, this algorithm can highly promote the estimation accuracy. And the lowpass filtering in time domain reduces the additive white Gaussian noise(AWGN) and intercarrier interference(ICI) significantly. It enables OFDM systems to work in mobile communications. And at the same time, accurate signal detection result can be given. The simulation results confirm good MSE and BER performance of the algorithm. |
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| Keywords: | orthogonal frequency division multiplexing(OFDM) channel estimation signal detection (iterative) algorithm |
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