TY - GEN
T1 - Coordinated relay beamforming based on the worst-case SINR in multicell wireless systems
AU - Wang, Da
AU - Bai, Lin
AU - Chen, Chen
AU - Jin, Ye
AU - Choi, Jinho
PY - 2012
Y1 - 2012
N2 - This paper studies the coordinated multicell downlink transmission to cope with the severe inter-cell interference (ICI) in future cellular systems. We propose an iterative scheme to jointly optimize the base station (BS) and relay beamforming weights to maximize the worst-case signal-to-interference-and-noise ratio (SINR) with perfect channel state information (CSI), under two different types of BS and relay power constraints, respectively, which are the total power constraints and individual power constraints. Using the semidefinite relaxation (SDR) technology, the optimization problems for BS and relay beamforming weights can be converted into semidefinite programming (SDP) problems, which can be effectively solved by interior-point methods. Simulation results demonstrate that the proposed iterative scheme can achieve near-optimal performance within a few iterations and provide a good tradeoff between performance and cost (i.e. The number of BS antennas and relays) in the multicell systems.
AB - This paper studies the coordinated multicell downlink transmission to cope with the severe inter-cell interference (ICI) in future cellular systems. We propose an iterative scheme to jointly optimize the base station (BS) and relay beamforming weights to maximize the worst-case signal-to-interference-and-noise ratio (SINR) with perfect channel state information (CSI), under two different types of BS and relay power constraints, respectively, which are the total power constraints and individual power constraints. Using the semidefinite relaxation (SDR) technology, the optimization problems for BS and relay beamforming weights can be converted into semidefinite programming (SDP) problems, which can be effectively solved by interior-point methods. Simulation results demonstrate that the proposed iterative scheme can achieve near-optimal performance within a few iterations and provide a good tradeoff between performance and cost (i.e. The number of BS antennas and relays) in the multicell systems.
UR - https://www.scopus.com/pages/publications/84877654068
U2 - 10.1109/GLOCOM.2012.6503732
DO - 10.1109/GLOCOM.2012.6503732
M3 - 会议稿件
AN - SCOPUS:84877654068
SN - 9781467309219
T3 - Proceedings - IEEE Global Communications Conference, GLOBECOM
SP - 3941
EP - 3945
BT - 2012 IEEE Global Communications Conference, GLOBECOM 2012
T2 - 2012 IEEE Global Communications Conference, GLOBECOM 2012
Y2 - 3 December 2012 through 7 December 2012
ER -