OFDM Channel Estimation Algorithm Research and Simulation in Tunnel Environment
Ting Wang, Ming Lv
Available Online August 2013.
- 10.2991/icacsei.2013.26How to use a DOI?
- Tunnel, Channel estimation, Least square criterion, Discrete Fourier Transform (DFT), Threshold.
Least square (LS) algorithm based on least square criterion has poor estimation performance under low signal to noise ratio, if we directly use this method in tunnel environment, it will lead to larger estimation error. Considering the defects of the LS algorithm, this paper propose an improved LS channel estimation algorithm based on DFT time domain filtering. Firstly, this method will remove noises outside the guard interval; then, by setting a dynamic threshold, noises within the guard interval will be removed. Simulation results show that this method can achieve better estimation performance in low signal-to-noise ratio by selecting appropriate threshold, and this method is suitable for channel estimation in tunnel.
- © 2013, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Ting Wang AU - Ming Lv PY - 2013/08 DA - 2013/08 TI - OFDM Channel Estimation Algorithm Research and Simulation in Tunnel Environment BT - Proceedings of the 2013 International Conference on Advanced Computer Science and Electronics Information (ICACSEI 2013) PB - Atlantis Press SP - 105 EP - 108 SN - 1951-6851 UR - https://doi.org/10.2991/icacsei.2013.26 DO - 10.2991/icacsei.2013.26 ID - Wang2013/08 ER -