Power adaptation for transmit antenna diversity in Rayleigh fading channels
Ye Hoon Lee, Namsoo Kim · 2003
In this paper, power adaptation for a transmit antenna diversity system is considered in Rayleigh fading channels. The optimal space-time domain power adaptation that minimizes the average bit error rate is analytically derived subject to a fixed average power constraint. Our results show that the proposed space-time domain power adaptation scheme has a significant performance gain over the conventional power adaptation in the space domain only.