Sum-Rate Optimization for the MIMO IC Under Imperfect CSI: A Deterministic Equivalent Approach

A new method is proposed to determine pre-coding matrices that achieve local maxima of the expected sum rate in a Multiple Input Multiple Output Interference Channel (MIMO IC), in the realistic scenario where only partial Channel State Information (CSI) is available at the transmitters. Relying on a random matrix analysis of the capacity of large dimensional Ricean channels introduced in, the expected sum rate of the K-user MIMO IC is approximated by a deterministic equivalent to which an iterative gradient scheme is applied to find local maxima of the approximated sum rate.

Provided by: Vienna University of Economics and Business Topic: Networking Date Added: Jan 2012 Format: PDF

Find By Topic