TY - GEN
T1 - Sum rate maximizing joint processing with limited backhaul and tree topology constraints
AU - Kaleva, Jarkko
AU - Bande, Meghana
AU - Tolli, Antti
AU - Juntti, Markku
AU - Veeravalli, Venugopal V.
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/8/9
Y1 - 2016/8/9
N2 - Coordinated downlink multi-point transmission with joint processing is considered for weighted sum rate maximization with limited backhaul connectivity. The cooperating base stations are assumed to form a network with a tree topology. The limited backhaul capacity is modeled as the maximum number of active users per base station. The combinatorial user admission problem is solved via a novel approach based on the alternating method of multipliers (ADMM), which divides the joint transmit beamformer design and the user allocation into separate subproblems each with a tractable complexity. In addition to the ADMM design, we propose a low complexity ℓ1 norm relaxation technique, which circumvents the combinatorial user allocation problem. The proposed schemes are shown to provide improved sum rate when compared to conventional coordinated beamforming and greedy user admission.
AB - Coordinated downlink multi-point transmission with joint processing is considered for weighted sum rate maximization with limited backhaul connectivity. The cooperating base stations are assumed to form a network with a tree topology. The limited backhaul capacity is modeled as the maximum number of active users per base station. The combinatorial user admission problem is solved via a novel approach based on the alternating method of multipliers (ADMM), which divides the joint transmit beamformer design and the user allocation into separate subproblems each with a tractable complexity. In addition to the ADMM design, we propose a low complexity ℓ1 norm relaxation technique, which circumvents the combinatorial user allocation problem. The proposed schemes are shown to provide improved sum rate when compared to conventional coordinated beamforming and greedy user admission.
UR - http://www.scopus.com/inward/record.url?scp=84984633839&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84984633839&partnerID=8YFLogxK
U2 - 10.1109/SPAWC.2016.7536889
DO - 10.1109/SPAWC.2016.7536889
M3 - Conference contribution
AN - SCOPUS:84984633839
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
BT - SPAWC 2016 - 17th IEEE International Workshop on Signal Processing Advances in Wireless Communications
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016
Y2 - 3 July 2016 through 6 July 2016
ER -