Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P1
Session:
Number:P1-98
A Simple ICI Pre-suppression Method for OFDM Systems
Kyung-Doc Jang, Se-Bin Im, Hyun-Suk Lee, Hyung-Jin Choi,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
we propose a simple ICI pre-suppression method to mitigate the effect of channel variations. The proposed method consists of three steps; average channel impulse response estimation, time-varying CIR estimation by Gaussian interpolation, and time-domain suppression. Since the proposed method utilizes CIR estimation scheme, we can also obtain noise reduction effect by zero-padding such as in traditional discrete Fourier transform-based channel estimation. Simulation results show that the proposed method can sufficiently reduce the ICI-induced performance degradation of the frequency-domain one-tap equalizer.