Noncoherent Space-Time Modulation for Single-Carrier Block Transmission

Space-time modulation exploiting diversity or/and coding gains has been a major focus in high-speed wireless communications systems against channel fading. To avoid channel estimation, we employ noncoherent space-time modulation in single-carrier (SC) block systems over channel frequency-selectivity in this Letter. Capitalizing on multi-channel input-output relation in time domain, we construct space-time codes of constant signaling amplitude by means of complex orthogonal sequences to achieve maximal diversity gain along with coding advantage. Numerical result suggests that SC block system can outperform its orthogonal frequency division multiplexing (OFDM) counterpart in terms of block error rate (BLER) under the same simulated scenario.