LMMSE SIMO receiver for short range non line of sight scattering communication

We propose linear minimum mean square error (LMMSE) receivers for optical wireless scattering communications with single transmitter and multiple receivers, namely the single-input multiple-output (SIMO) system, where the received signals exhibit the characteristics of discrete photons. We first propose an LMMSE receiver scheme based on photon-countingdetection, and then generalize to other type of receivers with amplification gains such as photomultiplier tube (PMT) andavalanche pho