Title :
Pilot-symbol aided channel estimation for OFDM with fast fading channels
Author :
Song, Won-Gyu ; Lim, Jong-Tae
Abstract :
In this paper, we address the problem of estimating a rapidly-varying channel in orthogonal frequency division multiplexing (OFDM) systems. To handle rapid variation within a transmission block, we propose a novel pilot-based estimation scheme which uses channel interpolation. In addition, we develop a simple Doppler frequency estimation scheme. We show that the proposed scheme has better performance in the high-Doppler frequency by simulations.
Keywords :
Doppler effect; OFDM modulation; channel estimation; fading channels; frequency estimation; interpolation; mobile radio; time-varying channels; Doppler frequency estimation; OFDM; channel interpolation; fast fading channels; high-Doppler frequency; orthogonal frequency division multiplexing; performance; pilot-symbol aided channel estimation; rapidly varying channel; simulations; transmission block; wideband mobile communication; Channel estimation; Fading; Frequency division multiplexing; Frequency estimation; Interpolation; Least squares approximation; Mobile communication; OFDM; Robustness; Wireless communication;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2003.819049
