摘要
基于训练序列的信道估计方法在慢衰落信道中呈现出较好的性能,但是这种方法不适用于快衰落环境,为了能够及时跟踪信道的变化,通常采用基于导频符号的信道估计方法。将针对采用连续传输方式的MIMO-OFDM系统,讨论基于导频符号的信道估计方法并进行了计算机仿真。
This paper discusses the channel estimation method in order to track the channel changing in time. This method is based on the pilot- frequency symbol. The channel estimation method based on the training sequence is not suit for the fast- fading channel although it takes on the better property in the slow- fading channel. Finally, the analysis and comparison of these algorithms are made by the computer simulation.
出处
《信息技术》
2006年第1期15-17,36,共4页
Information Technology
基金
国家自然科学基金资助项目(60372084)
关键词
多输入多输出
正交频分复用
信道估计算法
multiple input and multiple output （MIMO）
orthogonal frequency division multiplexing （OFDM）
channel estimation method
