Title :
Log-convexity property of the feasible SIR region in power-controlled cellular systems
Author_Institution :
Dept. of Comput. Eng. & Inf., City Univ. of Hong Kong, China
fDate :
6/1/2002 12:00:00 AM
Abstract :
Power optimization problems are sometimes more convenient to be solved in the signal-to-interference ratio (SIR) domain. However, this methodology requires a characterization of the feasible SIR region. We derive a log-convexity property of the feasible SIR region, which is potentially useful for the design of a power-controlled system.
Keywords :
cellular radio; code division multiple access; multiuser channels; optimisation; power control; radiofrequency interference; telecommunication control; CDMA; cellular radio systems; feasible SIR region; log-convexity property; power optimization problems; power-controlled cellular systems; signal-to-interference ratio; Algorithm design and analysis; Base stations; Control systems; Convergence; Eigenvalues and eigenfunctions; Land mobile radio; Multiaccess communication; Power control; Robust stability; Signal design;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2002.1010870
