This paper investigates the situation where a (large) group of terminals can be connected simultaneously to several base stations using distinct wireless technologies. We introduce and solve the problem of optimally sharing the mobile trans- mit power between different systems. Key results from asymp- totic random matrix theory (when the number of users and the dimensions of different systems increase) allow us to de- rive the best power allocation scheme in the sense of the sum-capacity of the overall system, for which the uplink is equivalent to a parallel fading multiple access channel. Moreover, we provide an iterative algorithm to solve the power allocation algorithm. Simulations for a finite number of users validate the asymptotic claims.
Cross-system resources allocation based on random matrix theory
Valuetools 2007, 2nd International Conference on Performance Evaluation Methodologies and Tools, October 23-25, 2007, Nantes, France
Best student paper award
Systèmes de Communication
Copyright ICST. Personal use of this material is permitted. The definitive version of this paper was published in Valuetools 2007, 2nd International Conference on Performance Evaluation Methodologies and Tools, October 23-25, 2007, Nantes, France and is available at :
PERMALINK : https://www.eurecom.fr/publication/2283