Title :
Blind channel estimator for MIMO-OFDM systems based on linear non-redundant precoding
Author :
Guo, Jianxin ; Jiang, Lei ; Gou, Yanxin ; Meng, Xiangru
Author_Institution :
Inst. of Telecommun. Eng., Air Force Eng. Univ., Xi´´an, China
Abstract :
In this paper, a blind channel estimator, which is based on linear non-redundant precoding and second-order statistics, is proposed for space time block (STBC) coded MIMO-OFDM systems. According to the complex orthogonal properties of the STBCs, the channel estimate with a scalar ambiguity can be obtained through a series of simple linear transformation. Simulation results show that the proposed scheme can track the time-varying channel state well and thus improve the system performance when the number of the statistical data is properly chosen.
Keywords :
MIMO systems; OFDM modulation; channel coding; channel estimation; linear codes; precoding; statistical analysis; time-varying channels; MIMO-OFDM systems; blind channel estimator; linear nonredundant precoding; second-order statistics; space time block coded; time-varying channel; Channel state information; MIMO; OFDM; Receiving antennas; State estimation; Statistics; System performance; Time-varying channels; Transmitting antennas; Wireless communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9335-X
DOI :
10.1109/WCNM.2005.1543979
