CSI FEEDBACK REDUCTION FOR MIMO INTERFERENCE ALIGNMENT

摘要

Channel state information (CSI) is reduced for a multi input multi output (MIMO) channel, in which feeding back a part of the CSI matrix is sufficient to align interference in a MIMO network. A feedback dimension quantifies a cost of the CSI feedback of the interference in the MIMO network. A feedback profile is determined that achieves a tradeoff between degrees of freedom, antenna resources and the cost of the feedback. The feedback profile parameterizes a feedback function, which determines how the CSI matrices are fed back to the transmitter. The precoders of the network are adaptive to only the partial CSI knowledge at the transmitter.

主权项

1. A system, comprising:
a memory storing executable components; and a processor, communicatively coupled to the memory, that facilitates execution of the executable components comprising:
a feedback component configured to retrieve a set of partial channel state information as feedback of an interference network comprising a number of data streams in a multiple input multiple output channel, and to facilitate interference alignment of the number of data streams in the multiple input multiple output channel; anda precoder component configured to encode a signal in a data stream of the number of data streams as a function of the set of partial channel state information.