Receiver design for wireless optical MIMO channels with magnification

In this work, receiver design for wireless optical MIMO channels with magnification is considered. The work done in this paper constitute a step towards the practical implementation of such links, since it is the first time the effects of spatial transformations are considered. Signal magnification introduces varying spatial frequency inter-channel interference (SF-ICI) at the receiver. A novel receiver design that uses complex windowing with decision feedback equalization is used to equalize the SF-ICI in spatial frequency domain. For SF-ICI limited channels, the novel receiver design achieved a low bit-error rate (BER) compared with rectangular windowing with bin-by-bin detection. However, for noise limited channels, rectangular windowing with bin-by-bin detections is the receiver design of choice.