Title :
Semiblind Channel and Carrier Frequency-Offset Estimation for Orthogonally Space-Time Block Coded MIMO Systems
Author :
ShahbazPanahi, Shahram ; Gershman, Alex ; Giannakis, Georgios B.
Author_Institution :
Inst. of Technol., Ontario Univ., Ottawa, Ont.
Abstract :
The problem of joint channel and carrier frequency offset (CFO) estimation is addressed in the context of multiple-input multiple-output (MIMO) communications using orthogonal space-time-block codes (OSTBCs). A new semiblind method is proposed to jointly estimate the channel matrix and the CFO parameter. Our method blindly estimates the CFO parameter along with a low-dimensional subspace where the channel is located, and then uses a few training blocks to extract the channel parameters from this subspace.
Keywords :
MIMO communication; block codes; channel coding; channel estimation; frequency estimation; orthogonal codes; space-time codes; carrier frequency-offset estimation; channel matrix; channel parameters extraction; multiple-input multiple-output communications; orthogonally space-time block coded MIMO systems; semiblind channel estimation; Additive noise; Fading; Frequency estimation; Gaussian noise; MIMO; Maximum likelihood decoding; Receiving antennas; Space technology; Transmitters; Virtual manufacturing; Channel and frequency offset estimation; MIMO systems; orthogonal space-time block codes;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0727-3
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2007.366374
