Power allocation between layers in multilayered space-time coding

Multilayered space-time coded modulation is an approach of combining array processing and space-time coding. Because different coded layers have different diversity gain, so unequal power levels should be allocated to the different coded layers for achieving best performance. This paper transforms the power allocation problem into two standard optimization problems. Simulation results demonstrate that new power allocation is 2∼2.5 dB better than equal power manner and 0.5∼1 dB better than experimental scheme in Tarokh et al. [May 1999].