The multi-channel least squares order recursive lattice smoother

For emerging multiple-input multiple-output communication systems, we investigate an algorithm that compensates intersymbol interference and suppresses interference among channels as well. In general, such an algorithm requires more complicated computation than single channel algorithms, and this causes many numerical errors, such as truncation errors, when running the algorithm on digital machines. We develop a multi-channel least squares order recursive lattice smoother that suppresses the intersymbol and interchannel interference while being numerically stable in the finite precision computation.