A new DFT based channel estimation method for OFDM systems over multipath channels
Jing Wang, Yuehong Qiu
Available Online November 2012.
- https://doi.org/10.2991/citcs.2012.263How to use a DOI?
- orthogonal frequency division multiplexing;channel estimation;DFT;threshold
- Channel estimation is one of the most significant technologies in the orthogonal frequency division multiplexing (OFDM) system and its accuracy will influence the performance of the whole system directly. Among all kinds of channel estimation algorithms, the least square'LS'estimation and the linear minimum mean-squared error (LMMSE) estimation are the most classic ones. However, both the two estimator are not able to reach a compromise between accuracy and computational complexity. The discrete Fourier transform (DFT) based channel estimation can get a better performance by a time domain processing. In this paper, we proposed an improved DFT based channel estimation which suppresses the noise by a new threshold setting method. The computer simulation results demonstrate that the proposed algorithm can reach accuracy close to the LMMSE algorithm and its computational complexity is much lower than the LMMSE estimator
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Jing Wang AU - Yuehong Qiu PY - 2012/11 DA - 2012/11 TI - A new DFT based channel estimation method for OFDM systems over multipath channels BT - 2012 National Conference on Information Technology and Computer Science PB - Atlantis Press SP - 1037 EP - 1040 SN - 1951-6851 UR - https://doi.org/10.2991/citcs.2012.263 DO - https://doi.org/10.2991/citcs.2012.263 ID - Wang2012/11 ER -