User admission in MIMO interference alignment networks

In this paper we consider an interference channel where a set of primary active users are cooperating through interference alignment over a constant multiple-input-multiple-output channel while a set of secondary users desire access to the channel. We present the conditions under which a secondary user can be admitted to the network. For the admitted users, we derive several beamforming designs maximizing approximately the secondary users’ sum-rate based on the number of the secondary users, the number of antennas at the secondary users and the total number of streams in the network of active users.

• Type: Journal
• Year: 2011
• Where: ICASSP
• Authors: Behrang Nosrat-Makouei, Jeffrey G. Andrews, Robert W. Heath Jr.
• Keywords: Active Users, ICASSP 2011, Secondary Users, Signal Processing, Users Desire Access