| 高速移动信道中的ICI消除算法 | |
| 白金波 ; 陈召兵 ; 王劲涛 ; 杨雷 ; 艾渤 ; BAI Jin-bo ; CHEN Zhao-bing ; WANG Jin-tao ; YANG Lei ; AI Bo | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | 子载波干扰 多普勒频移 线性时变 迭代 高速移动 Inter-Carrier Interference Doppler shift linear time-variable iteration high-speed mobile TN929.5 |
| 其他题名 | ICI cancellation algorithm for high-speed mobile channel |
| 中文摘要 | 针对当前研究中的子载波干扰(ICI)消除算法不支持高速移动环境的缺点,提出一种基于线性时变模型的ICI迭代消除算法。使用相邻3个正交频分复用(OFDM)信号帧对信道进行近似处理,将时变的无线信道建模为基于每条信号径的线性时变信道,信道线性时变斜率可通过相邻的导频符号获得,这样就可以预先构造频域干扰矩阵,然后通过循环迭代的方法将接收符号中的干扰消除。仿真结果表明,本文提出的ICI迭代消除算法可有效消除高速移动信道中的ICI。在多普勒偏移小的条件下,此算法带来的性能提升更大。; Aiming at the current Inter-Carrier Interference(ICI) cancellation algorithm cannot be applied in high-speed mobile scenario, a linear time-varying model based ICI iterative cancellation algorithm is proposed. The proposed algorithm approximately processes the channel by using three adjacent Orthogonal Frequency Division Multiplexing(OFDM) signal frames. The time-varying wireless channel is modeled as a channel that every path of it is linear and time-varying, and the slope of each path can be derived from the adjacent pilot symbols. Thus the frequency-distracting matrix can be pre-constructed, and then the interference in received symbols is cancelled by loop iteration method. Simulation results show that the proposed ICI iteration algorithm can effectively eliminate the ICI in high-speed mobile channel and the performance outperforms especially under the condition of low Doppler shift. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/146638]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 白金波,陈召兵,王劲涛,等. 高速移动信道中的ICI消除算法[J],2016, 2016. |
| APA | 白金波.,陈召兵.,王劲涛.,杨雷.,艾渤.,...&AI Bo.(2016).高速移动信道中的ICI消除算法.. |
| MLA | 白金波,et al."高速移动信道中的ICI消除算法".(2016). |
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