| 基于长前导序列的LS信道估计算法改进 |
| |
| 引用本文： | 文汝红.基于长前导序列的LS信道估计算法改进[J].四川激光,2012(5):30-31. |
| |
| 作者姓名： | 文汝红 |
| |
| 作者单位： | 宜春学院物理科学与工程技术学院,江西宜春336000 |
| |
| 摘 要： | 针对OFDM系统中导频数量过少，无法有效的获得完整的信道信息的特点，直接利用系统中的长前导序列作LS信道估计，分别在时域和频域上对该算法进行改进，仿真表明改进的算法能较好的抑制噪声的影响，提高系统的性能。
|
| 关 键 词： | 长前导序列 信道估计 最小平方估计准则 |
Optimization of LS channel estimation based on long preamble |
| |
| Affiliation: | WEN Ru- hang ( Physics Science and Technology College, Yichun University, Yichun 336000, China) |
| |
| Abstract: | The charmel estimation algorithm is discussed which is suitable for IEEE802.16 OPDM systems . In the light of the amount of pilot frequency is less, a modified method of Least - Square（LS） channel estimation is proposed in the time domain and frequency domain based on long preamble. The effect of the improved algorithm is showed on suppressing the effect of noise through simulation. It is meaningful for the following research on channel estimation. |
| |
| Keywords: | long preamble channel estimation LS |
| 本文献已被 维普 等数据库收录！ |
