On the computation of the maximum capacity of TDMA-CDMA/TDD systems

Jad Nasreddine (1) , Xavier Lagrange (2)

1 UPC - Universitat Politècnica de Catalunya = Université polytechnique de Catalogne [Barcelona]
2 RSM - Département Réseaux, Sécurité et Multimédia

The combination of the TDD mode and the TDMA technique in WCDMA systems engenders a new degree of flexibility that can increase system capacity and QoS levels of active channels if efficient slot allocation techniques are used. These techniques allow the system to control the allocation of slots to users, and thus lead to relevant reduction in interference levels. In order to study slot allocation performance, it is important to define a reference performance that gives adequate approximation of system maximum capacity. In this paper, we propose a novel formulation to the computation of system maximum capacity using a set of combinatorial optimization problems. Furthermore, we propose meta-heuristic algorithms that give satisfactory approximations for each combinatorial problem

Mots clés: Channel allocation; combinatorial mathematics; mobile radio; optimisation; quality of service; radiofrequency interference; time division multiple access

Domaines: Multimédia [cs.MM]; Réseaux et télécommunications [cs.NI]

Jad Nasreddine, Xavier Lagrange. On the computation of the maximum capacity of TDMA-CDMA/TDD systems. PIMRC'06 : 17th IEEE international symposium on personal, indoor and mobile radio, Sep 2006, Helsinki, Finland. ⟨10.1109/PIMRC.2006.254199⟩. ⟨hal-02166926⟩