Distributed Uplink Power Control for Optimal SIR Assignment in Cellular Data Networks

Abstract—This paper solves the joint power control and SIR assignment problem through distributed algorithms in the uplink of multi-cellular wireless networks. The 1993 Foschini-Miljanic distributed power control can attain a given fixed and feasible SIR target. However, feasibility of SIR target cannot be readily determined a priori, and, in addition, SIR needs to be jointly optimized with transmit powers in wireless data networks. In the vast research literature since the mid-1990s, solutions to this joint optimization problem are either distributed but suboptimal, or optimal but centralized. For convex formulations of this problem, we report the first distributed and optimal algorithm. The main issue that has been the research bottleneck for many years is the complicated, coupled constraint set, and we resolve it through a re-parametrization via the left Perron Frobenius eigenvectors, followed by development of a locally computable ascent direction. A key step is a new character...

• Type: Conference
• Year: 2006
• Where: INFOCOM
• Authors: Prashanth Hande, Sundeep Rangan, Mung Chiang
• Keywords: Communications, Distributed Algorithm, INFOCOM 2006, SIR Assignment, SIR Target