Space-Time Constellations for Partial Receiver CSI Based on Code Combination

We consider the design of space-time constellations when the channel state information (CSI) that is available at the receiver is an estimate of the channel coefficients with known error covariance. This setup encompasses the well-studied scenarios of perfect and no channel knowledge and allows a smooth transition between these two cases. We design constellations adapted to the error covariance of the receiver CSI by a suitable combination of constellations proposed for perfectly known and unknown channel at the receiver. Simulations confirm the benefits of the presented design