Paper Info
Title
Polite Water-Filling for Weighted Sum-Rate Maximization in MIMO B-MAC Networks Under Multiple Linear Constraints
Abstract
Optimization under multiple linear constraints is important for practical systems with individual power constraints, per-antenna power constraints, and/or interference constraints as in cognitive radios. While for single-user multiple-input multiple-output (MIMO) channel transmitter optimization, no one uses general purpose convex programming because water-filling is optimal and much simpler, it is not true for MIMO multiaccess channels (MAC), broadcast channels (BC), and the nonconvex optimization of interference networks because the traditional water-filling is far from optimal for networks. We recently found the right form of water-filling, polite water-filling, for capacity or achievable regions of the general MIMO interference networks, named B-MAC networks, which include BC, MAC, interference channels, X networks, and most practical wireless networks as special cases. In this paper, we extend the polite water-filling results from a single linear constraint to multiple linear constraints and use weighted sum-rate maximization as an example to show how to design high efficiency and low complexity algorithms, which find optimal solution for convex cases and locally optimal solution for nonconvex cases. Several times faster convergence speed and orders of magnitude higher accuracy than the state-of-the-art are demonstrated by numerical examples.
Year
DOI
Venue
2012
10.1109/TSP.2011.2173334
IEEE Transactions on Signal Processing
Keywords
DocType
Volume
interference constraint,polite water-filling,per-antenna power constraints,broadcast channels,mimo b-mac networks,mimo channel transmitter optimization,optimal solution,radiofrequency interference,general mimo interference network,multiple linear constraints,x networks,mimo multiaccess channel,interference constraints,nonconvex optimization,interference channel,cognitive radio,bc,interference network,mimo communication,traditional water-filling,convex programming,antenna arrays,multi-access systems,wireless networks,radio networks,single-user mimo channel transmitter optimization,concave programming,polite water-filling result,access protocols,mimo multiaccess channels,multiple linear constraint,single-user multiple-input multiple-output channel transmitter optimization,weighted sum-rate maximization,cognitive radios,single linear constraint,mimo networks,mimo,polite water-filling results,mimo interference networks,interference (signal),interference channels,interference networks,wireless network
Journal
60
Issue
ISSN
ISBN
2
1053-587X
978-1-4577-0594-6
Citations 
PageRank 
References 
16
0.91
17
Authors
5
Name
Order
Citations
PageRank
An Liu150046.79
Youjian Liu260549.82
Vincent K. N. Lau33650270.15
Haige Xiang415430.35
Wu Luo515316.38