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基于FG方法的MIMO-OFDM信道估计

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摘要 为提高MIMO-OFDM系统信道估计的性能,并且提高频谱的整体利用效率,文章提出一种利用信道特性构建因子图模型,结合EM算法进行信道估计的算法。将多输入多输出(MIMO)信道估计问题转化为一系列单输入单输出(SISO)信道估计问题,避免了大规模的矩阵运算。同时将EM算法代替因子图(FactorGraph)时域方向上的迭代,提高了系统性能。仿真实验表明,文章所提的算法能有效提高系统的性能。
作者 葛梅宝 钟子发 宋常建 杨大江
机构地区 合肥电子工程学院
出处 《信息通信》 2014年第3期51-52,共2页 Information & Communications
基金 国防预研基金项目资助"B3G和4G移动通信DK技术"(41101040402)
关键词 信道估计 因子图 EM算法
分类号 N929.53 [自然科学总论]
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参考文献11

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二级参考文献53

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信息通信
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