TY - GEN
T1 - Optimizing training and feedback for spatial intercell interference cancellation
AU - Zhang, Jun
AU - Andrews, Jeffrey G.
AU - Letaief, Khaled B.
PY - 2011/12/1
Y1 - 2011/12/1
N2 - In this paper, we investigate spatial intercell interference cancellation - an efficient technique to mitigate intercell interference in multicell networks. We consider a practical model for channel state information (CSI), where the transmit CSI is acquired through downlink training and uplink feedback. Due to the requirement of channel information from multiple base stations, the training and feedback design is quite different from conventional single-cell processing systems. We optimize training and feedback, where both analog and digital feedback is considered. For analog feedback, it is shown that the downlink training optimization provides a more significant performance gain than feedback optimization; while conversely for digital feedback over a finite-rate feedback channel, the feedback bit allocation is more important than the training optimization.
AB - In this paper, we investigate spatial intercell interference cancellation - an efficient technique to mitigate intercell interference in multicell networks. We consider a practical model for channel state information (CSI), where the transmit CSI is acquired through downlink training and uplink feedback. Due to the requirement of channel information from multiple base stations, the training and feedback design is quite different from conventional single-cell processing systems. We optimize training and feedback, where both analog and digital feedback is considered. For analog feedback, it is shown that the downlink training optimization provides a more significant performance gain than feedback optimization; while conversely for digital feedback over a finite-rate feedback channel, the feedback bit allocation is more important than the training optimization.
UR - http://www.scopus.com/inward/record.url?scp=84863142027&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2011.6134167
DO - 10.1109/GLOCOM.2011.6134167
M3 - Conference article published in proceeding or book
AN - SCOPUS:84863142027
SN - 9781424492688
T3 - GLOBECOM - IEEE Global Telecommunications Conference
BT - 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011
T2 - 54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011
Y2 - 5 December 2011 through 9 December 2011
ER -