Delay-Optimal Power and Precoder Adaptation for Multi-Stream MIMO Systems

Date Added: Jun 2009
Format: PDF

Multiple Input Multiple Output (MIMO) communication is well-known to boost the wireless spectral efficiency through spatial multiplexing. Substantial performance gain could be obtained by power and precoder adaptation according to the channel state information is available at the transmitter (CSIT). In a linear MIMO precoder design framework is proposed to minimize the weighted sum of Mean Square Errors (MSE) assuming knowledge of perfect CSIT. In and MIMO precoder design utilizing either limited feedback or outdated CSIT is proposed.