Special Block Coding for Spatial Modulation

Spatial Modulation is a new technique for Multiple-Input-Multiple Output (MIMO) systems that reduces the complexity of the transceiver and provides high data rate. It uses one or more selected antennas to transmit by utilizing antenna indices as a source of information. Maximum likelihood detector is used to detect the transmitted antenna indices and the transmitted symbol. If either the transmitted antenna index or the corresponding transmitted symbol is detected incorrectly, the other part is likely to be wrongly detected. In this paper, we introduce a block coding technique for the spatial modulation with more protection assigned to the antenna selection bits. After decoding process, the corrected antenna indices are fed back to the maximum likelihood detector to detect the new related transmitted message which achieves high Bit Error Rate (BER) performance with relatively low redundancy Keywords—Space Time, Trellis Space Time , Convolutional Codes, SO-STBC.