The Multiplexing Gain of a Two-Cell MIMO Channel With Unequal CSI

Date Added: Feb 2011
Format: PDF

In this paper, the joint precoding across two distant transmitters (TXs) to two receivers (RXs), each equipped with one antenna is discussed. The authors consider a distributed Channel State Information (CSI) configuration where each TX has a separate local estimate of the channel. The authors assume that no communication is possible between the TXs and based on the distributed CSI configuration, they introduce a concept of distributed MIMO precoding. They focus on the high Signal-to-Noise Ratio (SNR) regime such that the two TXs aim at jointly designing a precoding matrix to cancel the interference.