Title :
Layer separability of wireless networks
Author :
Ribeiro, Alejandro ; Giannakis, Georgios B.
Author_Institution :
Dept. of ECE, Univ. of Minnesota, Minneapolis, MN
Abstract :
A general wireless networking problem is formulated to jointly optimize end-to-end user rates, routes, link capacities, transmitted power, frequency and power allocation across subcarriers and fading states. It is proved that wireless networking problems in the presence of fading, while non-convex, have zero Lagrangian duality gap. A consequence of this result is the optimality of separating the problem in (the conventional) layers.
Keywords :
optimisation; radio networks; Lagrangian duality gap; end-to-end user rate; fading state; frequency allocation; layer separability; link capacity; optimization; power allocation; wireless network; Communication networks; Fading; Indexing; Lagrangian functions; Protocols; Radio spectrum management; Stochastic processes; Utility programs; Wireless communication; Wireless networks;
Conference_Titel :
Information Sciences and Systems, 2008. CISS 2008. 42nd Annual Conference on
Conference_Location :
Princeton, NJ
Print_ISBN :
978-1-4244-2246-3
Electronic_ISBN :
978-1-4244-2247-0
DOI :
10.1109/CISS.2008.4558633
