Title :
Semi-blind channel estimation for OFDM-STC
Author :
Wu, Yun ; Luo, Hartween ; Huang, Jianguo
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., China
Abstract :
A semi-blind method is proposed for estimating the channel responses of OFDM-STC system with three transmit antennas and one receive antenna. Firstly, a subspace-based algorithm is introduced to estimate the channel responses subject to one ambiguity parameter. Secondly, a method is presented to resolve the ambiguity by using optimum sequences. Computation simulations show this semi-blind method outperforms training sequences based non-blind methods for it incorporates the information of both known and unknown transmitted symbols.
Keywords :
OFDM modulation; antenna arrays; channel estimation; receiving antennas; space-time codes; transmitting antennas; OFDM-STC system; nonblind method; receive antenna; semiblind channel estimation; subspace-based algorithm; transmit antenna; Channel estimation; Computational modeling; Demodulation; Fading; Finite impulse response filter; OFDM; Receiving antennas; Signal processing algorithms; Transmitters; Transmitting antennas;
Conference_Titel :
VLSI Design and Video Technology, 2005. Proceedings of 2005 IEEE International Workshop on
Print_ISBN :
0-7803-9005-9
DOI :
10.1109/IWVDVT.2005.1504593
