TY - JOUR
T1 - Optimization-theoretic analysis of stability-optimal transmission policy for multiple-antenna multiple-access channel
AU - Boche, Holger
AU - Wiczanowski, Marcin
N1 - Funding Information:
Manuscript received June 21, 2005; revised June 13, 2006. This work was supported by the German Science Foundation (DFG) under Grant BO 1734/2-1. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Martin Haardt.
PY - 2007/6
Y1 - 2007/6
N2 - The philosophy of scheduler design in modern wireless data networks exposes the tendency towards layer-spanning optimization (cross-layer design). An important particular goal of joint design of the physical and (data) link layer appears to be the achievement of the entire stability region of the network. In this work, we provide the optimization-theoretic analysis of the corresponding policy, referred to as stability-optimal policy, in the multiple-antenna multiple-access channel. We characterize some useful features of the policy. In particular, we state the conditions for optimality of link subset transmission and expose essential differences to the established scheduling approaches, such as sum-rate maximization. This further allows for the statement of necessary and sufficient conditions for the overall stability optimality of successive interference cancellation order. Finally, we present the approach of splitting of the multilink stability problem into the set of single-link optimization problems. We propose a corresponding iterative optimization method, which is an extension of the known concept of iterative waterfilling from [1].
AB - The philosophy of scheduler design in modern wireless data networks exposes the tendency towards layer-spanning optimization (cross-layer design). An important particular goal of joint design of the physical and (data) link layer appears to be the achievement of the entire stability region of the network. In this work, we provide the optimization-theoretic analysis of the corresponding policy, referred to as stability-optimal policy, in the multiple-antenna multiple-access channel. We characterize some useful features of the policy. In particular, we state the conditions for optimality of link subset transmission and expose essential differences to the established scheduling approaches, such as sum-rate maximization. This further allows for the statement of necessary and sufficient conditions for the overall stability optimality of successive interference cancellation order. Finally, we present the approach of splitting of the multilink stability problem into the set of single-link optimization problems. We propose a corresponding iterative optimization method, which is an extension of the known concept of iterative waterfilling from [1].
KW - Multiple-access channel (MAC)
KW - Multiple-input multiple-output
KW - Stability
KW - Successive interference cancellation (SIC)
UR - http://www.scopus.com/inward/record.url?scp=34249794879&partnerID=8YFLogxK
U2 - 10.1109/TSP.2006.890926
DO - 10.1109/TSP.2006.890926
M3 - Article
AN - SCOPUS:34249794879
SN - 1053-587X
VL - 55
SP - 2688
EP - 2702
JO - IEEE Transactions on Signal Processing
JF - IEEE Transactions on Signal Processing
IS - 6 I
ER -