Multi-dimensional equalization for adjacent channel interference

A multidimensional equalization method is investigated for the reduction of the adjacent channel interference that can often appear in mobile data transmission. The method essentially samples at a sufficiently high rate to capture adjacent channel signals and a multidimensional equalizer is used to mitigate crosstalk interference along with intersymbol interference. When adjacent channel spacing is close and crosstalk is the dominant noise source, large gains in effective signal-to-noise ratio are exhibited by multidimensional equalization, as quantified in this work. The trade-off for the improvement is an approximate doubling to tripling of receiver computational requirements and the need for the identification of a larger number of adaptive equalization parameters