Title :
Phase-Direct Channel Estimation for Space-Time OFDM
Author :
Hsieh, Shih-Fu ; Wu, T.Y.
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu
Abstract :
Space time (ST) OFDM can achieve high data rate transmissions with diversity gains. However, channel estimation is necessary at the receiver end to recover the signal. To further improve the subspace-based estimated channel, we introduce phase direct (PD) in the ST OFDM system. PD is originally used in OFDM system, and not suited in ST OFDM. Hence, we exploit the transmitted data´s spatial and temporal correlation to develop a sum-difference square algorithm to solve this problem for ST OFDM
Keywords :
OFDM modulation; channel estimation; correlation methods; data communication; matrix algebra; high data rate transmissions; phase-direct channel estimation; space-time OFDM; spatial correlation; subspace-based estimated channel; sum-difference square algorithm; temporal correlation; Bandwidth; Channel estimation; Diversity methods; Frequency estimation; Intersymbol interference; OFDM; Receiving antennas; Transceivers; Transmitters; Transmitting antennas;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1660982
