Title :
A BEM for Estimation of Time-varying Channels in OFDM
Author :
Chen, Shaoping ; Dai, Guangfa ; Rao, Wengui
Author_Institution :
Dept. of Electron. & Inf. Eng., South-Central Univ. for Nat., Wuhan
Abstract :
A basis expansion model (BEM) for time-varying channels is proposed. It overcomes the effects of Gibbs phenomenon of the widely used complex-exponential BEM (CE-BEM) by using baseline tilting and therefore significantly reduces the modeling error. Theoretical analysis and simulation results show that the modeling error of the proposed BEM is obviously lower than those of the complex-exponential BEM (CE-BEM) and the general complex-exponential BEM (GCE-BEM).
Keywords :
OFDM modulation; channel estimation; time-varying channels; Gibbs phenomenon; OFDM; baseline tilting; basis expansion model; channel estimation; time-varying channels; AWGN; Analytical models; Electronic mail; Error analysis; Least squares approximation; Mobile communication; Mobile computing; OFDM; Time domain analysis; Time-varying channels; BEM; Doubly-selective Channel; OFDM;
Conference_Titel :
Communications and Mobile Computing, 2009. CMC '09. WRI International Conference on
Conference_Location :
Yunnan
Print_ISBN :
978-0-7695-3501-2
DOI :
10.1109/CMC.2009.203
