2D Time and frequency channel estimation in OFDM

Hi all,

please help me with algorithms or steps to take in estimating a channel in 2D. I already did so in frequency domain . that is by using LS method. very simple, but i want to use a more complex system so maybe i will have to use 2D wiener or 2x 1D wiener, i just don't know how to do channel estimation in time domain. How can i extend my code. thx in advance!