Title :
Time-varying channel estimation based on pilot tones in OFDM systems
Author :
Hu, Die ; Yang, Luxi
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
Abstract :
The time-varying channel estimation methods for OFDM systems based on pilot tones are investigated. Grouped and equispaced pilot tones to estimate the channel impulse response (CIR) of some given moments are used. The CIR of other moments over one OFDM symbol is estimated by a new low-pass interpolation method proposed in this paper. The simulation results show that the normal mean-square error (NMSE) of the proposed method is smaller than the linear interpolation method and model-based interpolation method.
Keywords :
OFDM modulation; channel estimation; interpolation; mean square error methods; time-varying channels; transient response; OFDM systems; linear interpolation method; low-pass interpolation method; model-based interpolation method; moment channel impulse response; normal mean-square error; pilot tones; time-varying channel estimation; Bandwidth; Channel estimation; Interpolation; Least squares approximation; OFDM; Parameter estimation; Robustness; Time domain analysis; Time-varying channels; Wireless communication;
Conference_Titel :
Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
0-7803-7702-8
DOI :
10.1109/ICNNSP.2003.1279371
