Study of ICI Suppression Method Based on Affine Fourier Transform
- 10.2991/3ca-13.2013.84How to use a DOI?
- Time-frequency double selective channel, high-speed wireless mobile communication environment, Affine Fourier Transform(AFT), Invertible Discrete Affine Fourier Transform(IDAFT), Inter-Carrier Interference (ICI) suppression scheme Introduction
The time-frequency double selective characteristic of wireless fading channel destroys the orthogonality among subcarriers, thus generating ICI, which affects the quality of communication seriously. Starting from subcarriers, an ICI suppression scheme based on affine fourier transform was proposed to achieve data communication of high reliability, high spectrum efficiency and high capacity in high-speed wireless communication environment. The scheme was that, the signal, on the sending side, was treated with IDAFT, then the chirp type cyclic prefix was inserted into the transformed signal, after a high-speed transmission channel, the cyclic prefix of the received signal was removed and then the phase was compensated, according to the channel state, and at last, the transmission signal was recovered by DAFT. Using scattering function and the actual channel parameters, the interference power and communication performance of DAFT-OFDM system were analyzed and simulated. The simulation result shows the scheme can effectively combat ICI in time-frequency double selective channel and the proposed system can keep good communication quality in the high-speed mobile environment.
- © 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 - Zengyou Sun AU - Xia Ling PY - 2013/04 DA - 2013/04 TI - Study of ICI Suppression Method Based on Affine Fourier Transform BT - Proceedings of the 2nd International Symposium on Computer, Communication, Control and Automation PB - Atlantis Press SP - 340 EP - 343 SN - 1951-6851 UR - https://doi.org/10.2991/3ca-13.2013.84 DO - 10.2991/3ca-13.2013.84 ID - Sun2013/04 ER -