Stochastic Adaptive Multilevel Waterfilling in MIMO-OFDM WLANs
Irtiza Zaidi, V. Krishnamurthy · 2006
This paper presents a stochastic adaptive multilevel waterfilling algorithm for optimal power allocation in a MIMO- OFDM system using imperfect channel estimates. The algorithm has a self-learning capability that allows it to adapt to non- stationary fading channels. Analysis and simulations reveal the algorithm's excellent tracking ability in a slowly time-varying channel.