Title :
Modified Kalman Filters for Channel Estimation in Orthogonal Space-Time Coded Systems
Author :
Loiola, Murilo B. ; Lopes, Renato R. ; Romano, João M T
Author_Institution :
Sch. of Electr. & Comput. Eng., Univ. of Campinas (Unicamp), Campinas, Brazil
Abstract :
We derive and analyze two modified Kalman channel estimators (KCE) for time-varying, flat, spatially correlated MIMO channels in systems employing orthogonal space-time block codes: the steady-state KCE, which is less complex than the KCE, and the fading memory KCE, which is more robust to model mismatch.
Keywords :
Kalman filters; MIMO communication; channel estimation; space-time codes; KCE; MIMO channels; channel estimation; modified Kalman channel estimators; modified Kalman filters; orthogonal space time coded systems; Channel estimation; Correlation; Equations; Kalman filters; MIMO; Mathematical model; Steady-state; Channel estimation; Kalman filters; MIMO; Riccati equations; space-time codes; state estimation;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2011.2170682
