TY - GEN
T1 - Opportunistic interference alignment effects in cooperative broadcast of multiple-source
AU - Bagheri, Saeed
AU - Scaglione, Anna
PY - 2010
Y1 - 2010
N2 - In this paper we are concerned with a scenario in which multiple messages (K) are concurrently flooding a dense wireless network. Rather than using standard packet switching we assume that the nodes relay cooperatively the messages, if they are able to decode them. Our objective is to propose and analyze a scheme that exploits the alignment of interference that opportunistically arises in the relay process. More specifically, each receiver observes the K messages over D dimensions through an MIMO random channel. For each message, there exists an MIMO channel matrix that is associated with the interference. The key idea is to use the spatial occurrence of MIMO interference matrices that have a high condition number to design good beamformers to decode the messages. We refer to this effect as opportunistic interference alignment. We show that this scheme can result in successful broadcast.
AB - In this paper we are concerned with a scenario in which multiple messages (K) are concurrently flooding a dense wireless network. Rather than using standard packet switching we assume that the nodes relay cooperatively the messages, if they are able to decode them. Our objective is to propose and analyze a scheme that exploits the alignment of interference that opportunistically arises in the relay process. More specifically, each receiver observes the K messages over D dimensions through an MIMO random channel. For each message, there exists an MIMO channel matrix that is associated with the interference. The key idea is to use the spatial occurrence of MIMO interference matrices that have a high condition number to design good beamformers to decode the messages. We refer to this effect as opportunistic interference alignment. We show that this scheme can result in successful broadcast.
UR - http://www.scopus.com/inward/record.url?scp=79957997703&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79957997703&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2010.5757809
DO - 10.1109/ACSSC.2010.5757809
M3 - Conference contribution
AN - SCOPUS:79957997703
SN - 9781424497218
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1607
EP - 1611
BT - Conference Record of the 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
T2 - 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
Y2 - 7 November 2010 through 10 November 2010
ER -