AbstractAbstract for the report: Combining Long-term and Low Rate Short-term Channel State Information over Correlated MIMO Channels
A simple structure to exploit both long-term and partial short-term channel state information at the transmitter (CSIT) over a family of correlated multiple-antenna channels is proposed. Partial short-term CSIT in the form of a weighting matrix is combined with a unitary transformation based on the long-term channel statistics. The heavily quantized feedback link is optimized to maximize the expected achievable rate under different power constraints, using vector quantization techniques. Robustness against errors in the feedback link is also pursued with tools in channel optimized vector quantization. Simulations indicate the benefits of the proposed scheme.