Robust Rate, Power and Precoder Adaptation for Slow Fading MIMO Channels with Noisy Limited Feedback

摘要

In this paper, we shall focus on a robust joint rate, power and precoder design for MIMO slow fading channels with noisy limited feedback. To take into consideration of the potential packet errors, we optimize the system goodput (b/s/Hz successfully delivered to the receiver) with respect to a general model of limited feedback error. We show that the codebook design that maximizes the system goodput can be converted to an equivalent "maximin" problem. Numerical results show that the proposed framework can achieve significant goodput gain comparing to various naive designs (designed for error- free limited feedback). Simulation results demonstrated the importance of taking the potential CSIT errors into the limited feedback design for robust performance.