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State-Selection in a Space-Time-State Block Coded MIMO Communication System Using Reconfigurable PIXEL Antennas

In this paper, we propose a novel Multiple-Input Multiple-Output (MIMO) wireless communication system employing reconfigurable PIXEL antennas at the receiver. We design a Space-Time-State Block Coding scheme for the PIXEL-based reconfigurable MIMO system and propose optimal and ad hoc state-selection algorithms that achieve maximum diversity gains. Moreover, we prove that in state-selection schemes, contrary to antenna selection, there is no benefit in selecting more than one state. Furthermore, we discuss the gains of state-selection over the state-switching scheme proposed in [1]. Finally, we evaluate the theoretical findings through simulations. These simulations are conducted using a realistic channel model, that takes into account the radio-electric characteristics (radiation pattern, gain, efficiency, etc.) of the PIXEL antennas.