In this work, we analyze the uplink capacity of a cellular Ricean channel system where clusters of small cell base stations are coordinated by a central processor. Two different scenarios dealing with intercluster interference are analyzed: global multicell joint decoding, where all base stations are connected to a central processor, and interference alignment that is used to mitigate interclus...

Interference alignment scheme, because of non ideal channel, can cause interference to primary user increases, it is worse at the same time the user's transmission rate, aiming at this problem, this paper studies the multiple antenna system is a kind of cognitive radio interference can achieve full multiplexing gain alignment method, analyses the interference alignment method under the conditio...