NDLI: Simultaneous routing and power allocation in CDMA wireless data networks

Content Provider	IEEE Xplore Digital Library
Author	Johansson, M. Lin Xiao Boyd, S.
Copyright Year	2003
Description	Author affiliation: Dept. of Signals, Sensors & Syst., R. Inst. of Technol., Stockholm, Sweden (Johansson, M.)
Abstract	The optimal routing of data in a wireless network depends on the link capacities, which, in turn, are determined by the allocation of transmit powers across the network. Thus, the optimal network performance can only be achieved by simultaneous optimization of routing and power allocation. In this paper, we study this joint optimization problem in CDMA data networks using convex optimization techniques. Although link capacity constraints of CDMA systems are not jointly convex in rates and powers, we show that coordinate projections or transformations allow the simultaneous routing and power allocation problem to be formulated as (in systems with interference cancellation) or approximated by (in systems without interference cancellation) a convex optimization problem which can be solved very efficiently. We also propose a heuristic link-removal procedure based on the convex approximation to further improve the system performance.
Starting Page	51
Ending Page	55
File Size	323645
Page Count	5
File Format	PDF
ISBN	0780378024
DOI	10.1109/ICC.2003.1204141
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Routing Intelligent networks Multiaccess communication Resource management Wireless sensor networks Interference cancellation Interference constraints Constraint optimization System performance Signal to noise ratio
Content Type	Text
Resource Type	Article

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