Title :
Kalman filter channel estimation based on Comb-type pilots for OFDM system in time and frequency -selective fading environments
Author :
Mahmoud, Hala ; Mousa, Allam ; Saleem, Rashid
Author_Institution :
Dept. of Electron. Eng., Al-Quds Univ., Jerusalem
Abstract :
Kalman-filter method have been used for the estimation of time-frequency-selective fading channels in OFDM systems, the estimation is based on Comb-type pilot frequencies arrangement, the channel coefficients that belong to the pilot subcarriers are estimated. Then these estimates are interpolated using different types of interpolations like; Low pass interpolation, Spline cubic interpolation or Linear interpolation. The performances of all schemes have been compared by finding Bit Error Rate where BPSK modulation scheme was used.
Keywords :
Kalman filters; OFDM modulation; channel estimation; fading channels; interpolation; phase shift keying; BPSK modulation; Kalman filter channel estimation; OFDM system; comb type pilots; frequency selective fading environments; time selective fading environments; Channel estimation; Discrete Fourier transforms; Fading; Frequency estimation; Interpolation; Kalman filters; Least squares approximation; OFDM modulation; Recursive estimation; Spline; Channel Estimation; Kalman Filtering; OFDM; time-varying channels;
Conference_Titel :
Communications, Computers and Applications, 2008. MIC-CCA 2008. Mosharaka International Conference on
Conference_Location :
Amman
Print_ISBN :
978-9927-486-02-0
Electronic_ISBN :
978-9927-486-03-7
DOI :
10.1109/MICCCA.2008.4669851
