Title :
General analysis of downlink power control in CDMA systems
Author :
Lima, Adriano Da Rocha ; Brandao, Joao Celio
Author_Institution :
CETUC, Univ. Catolica de Rio de Janeiro, Brazil
Abstract :
The classical analysis of the downlink power control in CDMA cellular systems neglects the background noise in the mobile receivers and leads to a solution for the equalized signal-to-interference ratio by solving an eigenvalue problem. By considering the background noise, we obtain a general solution that includes the previous result and is optimal in the sense that it minimizes the transmitted power. Detailed illustration is presented for an homogeneous system and a general formulation is given for non-homogeneous systems
Keywords :
cellular radio; code division multiple access; eigenvalues and eigenfunctions; minimisation; power control; radio links; radio receivers; radiofrequency interference; telecommunication control; CDMA systems; background noise; cellular systems; downlink power control; eigenvalue; homogeneous system; minimization; mobile receivers; non-homogeneous systems; signal-to-interference ratio; Background noise; Base stations; Degradation; Downlink; Eigenvalues and eigenfunctions; Interference; Multiaccess communication; Power control; Power system modeling; Signal analysis;
Conference_Titel :
Telecommunications Symposium, 1998. ITS '98 Proceedings. SBT/IEEE International
Conference_Location :
Sao Paulo
Print_ISBN :
0-7803-5030-8
DOI :
10.1109/ITS.1998.713112
