Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Joint routing and power control in Rayleighfaded wireless networks with ARQ protocols
 8th International Symposium on Wireless Communication Systems, ISWCS 2011 : Aachen, Germany, 6  9 November 2011 Piscataway: IEEE, 2011 ISBN: 9781612844039 ISBN: 9781612844022 S.599603 
 International Symposium on Wireless Communication Systems (ISWCS) <8, 2011, Aachen> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer HHI () 
Abstract
In this paper we formulate a goodputoriented utility optimization problem for routing and power control in Rayleigh faded wireless networks with Automatic Retransmission reQuest (ARQ) protocols. This work proposes two heuristic approaches to estimate the goodput capacity in such wireless networks. The resulting approximated capacities are nonconvex functions of power variables. As a result, the utility optimization problem is nonconvex, and for this we address the problem by solving a sequence of convex approximation problems. If the initial convex approximation is feasible, the sequence is shown to converge to a KarushKuhnTucker(KKT) point of the original utility optimization problem. The convex approximation problems are solved recursively by means of primaldual methods that are shown to be amenable to distributed implementation by adjoint network. The seamless interaction between the successive convex approximation and the primaldual algorithm constitutes the proposed successive primaldual convex approximation (SPDCA) algorithm.