| 摘要: |
| 为了能够获得较精确的快时变信道估计，利用模糊模型拟合快时变信道，提出了一种
新的信道估计算法。算法采用自适应技术进行导频子载波频域传输函数模型参数的识别，然
后通过插值拟合全部信道的频域传输函数。仿真结果表明，在系统多普勒频移小于0.1的情
况下，信道估计的MSE性能得到改善。 |
| 关键词: MIMO-OFDM 自适应信道估计 快时变信道 模糊识别 |
| DOI：10.3969/j.issn.1001-893x.2013.07.019 |
|
| 基金项目:广东省科技厅产学研结合项目（2011B090400233） |
|
| A novel adaptive channel estimation algorithm for MIMO-OFDM systems in fast time-varying channels |
| GONG Han-dong,WANG Rui-chun |
| () |
| Abstract: |
| In order to obtain accurate channel estimation in fast time-varying channels, a n
ovel channel estimation algorithm is proposed by using the fuzzy model to track
the fast time-varying channels. Based on the adaptive technique,
the identification for the frequency transmission function model of pilot subcar
riers is carried out. The fitting for the frequency channel transmission functio
n of all subcarriers can be obtained by interpolation. According to the simulati
on results, when the Doppler shift of the systems is less than 0.1, the algorith
m effectively improves the MSE of the channel estimation. |
| Key words: MIMO-OFDM adaptive channel estimation fast time-varying channel fuzzy recognition |
