Dual-Hop Spatial Modulation (Dh-SM)
Spatial Modulation (SM) is a recently proposed approach to Multiple - Input - Multiple-Output (MIMO) systems which entirely avoids Inter - Channel Interference (ICI) and requires no synchronisation between the transmit antennas, while achieving a spatial multiplexing gain. In this paper, the authors introduce Dual-hop Spatial Modulation (Dh-SM). They look at the effect that Dh-SM has on the required signal to noise ratio (SNR) at the destination and how it can help alleviate the multi-hop burden. Initial BitError-Ratio (BER) results comparing the performance of Dh-SM with orthogonal Decode-and-Forward (DF) are presented where Dh-SM is shown to have up to a 10 dB SNR advantage.