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	Polite Water-filling for Weighted Sum-rate Maximization in MIMO B-MAC Networks under Multiple Linear Constraints
	Liu, An ; Liu, Youjian ; Lau, Vincent K. N. ; Xiang, Haige ; Luo, Wu
	2011
关键词	Polite Water-filling MIMO Networks Weighted Sum-rate Maximization Multiple Linear Constraints OPTIMIZATION CHANNELS
英文摘要	The algorithms in this paper exploit optimal input structure in interference networks and is a major advance from the state-of-the-art. Optimization under multiple linear constraints is important for interference networks with individual power constraints, per-antenna power constraints, and/or interference constraints as in cognitive radios. While for single-user MIMO channel transmitter optimization, no one uses general purpose optimization algorithms such as steepest ascent because water-filling is optimal and much simpler, this is not true for MIMO multiaccess channels (MAC), broadcast channels (BC), and the non-convex 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 some capacity/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 use weighted sum-rate maximization under multiple linear constraints in interference tree networks, a natural extension of MAC and BC, as an example to show how to design highly efficiency and low complexity algorithms. Several times faster convergence speed and orders of magnitude higher accuracy than the state-of-the-art are demonstrated by numerical examples.; Computer Science, Theory & Methods; Engineering, Electrical & Electronic; EI; CPCI-S(ISTP); 0
语种	英语
DOI标识	10.1109/ISIT.2011.6033989
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/293141]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Liu, An,Liu, Youjian,Lau, Vincent K. N.,et al. Polite Water-filling for Weighted Sum-rate Maximization in MIMO B-MAC Networks under Multiple Linear Constraints. 2011-01-01.

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