Dual Orthogonal Space-Time Coded Modulation and Noncoherent Detection for Multiantenna Ultra-Wideband Communications

In this paper, two novel space-time coded modulation and corresponding noncoherent detection schemes for Ultra-Wideband (UWB) impulse radio system are proposed. An additional orthogonality is introduced to original Orthogonal Space-Time Block Code (OSTBC) for performance enhancement in the proposed two schemes, which is termed as Dual Orthogonal Space-Time Coded Modulation (DOSTCM). The specially designed signal structures from the DOSTCM exploit the advantage of multiantenna system and enable simple but effective noncoherent detection. Simulation results show our schemes achieve outstanding bit error rate (BER) performance.