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Spatial modulation with dual-polarized antennas

In this work, multiple-input multiple-output (MIMO) communication employing spatial modulation (SM) is considered with dual-polarized antennas over correlated Rayleigh and Rician channels. A general average bit-error probability (ABEP) upper bounding framework is presented for the dual-polarized SM-MIMO systems. This framework is used to derive a closed form condition for the asymptotic feasibility regions for employing dual-polarization versus using uni-polarized antennas. Theoretical derivations are validated with extensive simulation results. Both analysis and simulation results indicate that especially in the case of correlated channels, the use of dual-polarized antennas for SM is more feasible in terms of both allocated space and error performance than equivalent systems implemented with uni-polarized antennas.