A novel space-time shift keying and its reduced complexity detector

This paper proposes a space-time shift keying (STSK) modulation scheme, which maps the information onto two dimensions, i.e., the temporal and spatial dimensions. For the proposed modulation, a detector with reduced complexity is also proposed. The complexity of proposed detector is reduced with the slight degradation of performance. The simulation results show that the proposed system achieves good performance. Furthermore, since the STSK utilizes two resources to modulate information bits, the STSK obtains different error rates for the information modulated by different resources. Therefore, the potential of the proposed STSK to be applied in the unequal error protection (UEP) is also discussed.