Title :
Whitening-rotation-based semi-blind estimation of MIMO FIR channels
Author :
Zhang, Qingwu ; Zhu, Wei-Ping ; Meng, Qingmin
Author_Institution :
Inst. of Signal Process. & Transm., Nanjing Univ. of Posts & Telecommun., Nanjing, China
Abstract :
In this paper, a new semi-blind algorithm is presented for the estimation of Multiple-Input Multiple-Output (MIMO) Finite Impulse Response (FIR) channels. First, by using the MIMO linear prediction (LP), the whitening matrix is estimated blindly from the received data. The rotation matrix is then estimated by employing pilot symbols. The proposed method is validated through computer simulation-based experimentations, showing a high estimation accuracy as compared to the LS method in terms of the MSE of the channel estimate.
Keywords :
MIMO communication; blind source separation; channel estimation; matrix algebra; prediction theory; MIMO FIR channels; MIMO linear prediction; channel estimation; multiple-input multiple-output finite impulse response channels; rotation matrix; semi-blind algorithm; whitening matrix; whitening-rotation-based semi-blind estimation; Channel estimation; Computational modeling; Computer simulation; Finite impulse response filter; MIMO; Matrix decomposition; Maximum likelihood estimation; Receiving antennas; Signal processing algorithms; Telecommunication computing; MIMO FIR channels; channel estimation; semi-blind; whitening-rotation;
Conference_Titel :
Wireless Communications & Signal Processing, 2009. WCSP 2009. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4856-2
Electronic_ISBN :
978-1-4244-5668-0
DOI :
10.1109/WCSP.2009.5371541
