Fully-diverse unitary subgroups space-time codes

Differential unitary space-time group codes are effective for multiple-antenna wireless communications, especially in rapidly changing mobile environments. In this paper, we propose new unitary infinite subgroups are on the basis of double coset decomposition that is called Bruhat decomposition. Moreover, we give an interesting example of proposed unitary subgroup space-time codes for 16PSK, and display the performance for Rayleigh fading channels. Finally, we describe how the new space-time codes are combined with coded modulation systems.