Paper Info
Title
Precoder optimization with local and shared CSI on the K-user MIMO interference channel.
Abstract
Network MIMO provides significant gains compared to transmission schemes based on the interference channel in cellular networks. However, the interference channel is adopted very often in particular due to data sharing limitations of network MIMO. These limitations are due to backhaul links which have finite capacity and also introduce delay. In interference channels, even though data is not exchanged between the transmitters, the global channel state information (CSI) needs to be shared in order to attain the degrees of freedom (DoF) of the channel. This highlights the necessity of reducing the amount of CSI exchange and relying more on local CSI to design the precoders in particular when the local CSI is accurate. In this contribution, cellular downlink transmission using time division duplexing (TDD) is considered where the base stations (BS) can estimate their own channels through reciprocity during the uplink phase. The interfering BSs share their channel estimates via backhaul links of finite capacity. We propose a distributed precoding method based on interference alignment (IA) which is shown to require relatively less CSI exchange compared to other methods.
Year
DOI
Venue
2013
10.1109/PIMRC.2013.6666369
PIMRC
Keywords
Field
DocType
MIMO communication,cellular radio,channel capacity,channel estimation,precoding,radiofrequency interference,time division multiplexing,BS,DoF,IA,K-user MIMO interference channel,backhaul links,base stations,cellular downlink transmission,cellular networks,channel estimation,degrees of freedom,distributed precoding method,finite capacity,global channel state information,interference alignment,network MIMO transmission schemes,precoder optimization,shared CSI
Radio resource management,Multi-user MIMO,Computer science,MIMO,Computer network,Zero-forcing precoding,Channel capacity,Precoding,Channel state information,Telecommunications link
Conference
Citations 
PageRank 
References 
1
0.36
5
Authors
2
Name
Order
Citations
PageRank
Mohsen Rezaee1345.42
Maxime Guillaud231530.64