Constrained Power Control
1994 (English)In: Wireless personal communications, ISSN 0929-6212, E-ISSN 1572-834X, Vol. 1, no 4, 257-270 p.Article in journal (Refereed) Published
High system capacities can be achieved by controlling the transmitter power in multiuser radio systems. Power control with no constraint on the maximum power level has been studied extensively in earlier work [1Â18]. Transmitter power is at a premium in radio systems such as cellular systems and PCS. There is a limit on the maximum transmitter power especially at the terminals (e.g. mobile units and handsets) since the power comes from a battery. In this paper we study power control that maximizes the minimum carrier to interference ratio (CIR), with a constraint on the maximum power. The optimal power vector solution lies on the boundary of the constrained power vector set and achieves a balance in the CIR's. Results indicate that the constraints do not induce any stability problems. A distributed scheme with favourable convergence properties and close to optimum performance is presented. Simulation results show that the algorithm tries to maximize the number of terminals served with CIR greater than or equal to the target CIR, while conserving power.
Place, publisher, year, edition, pages
Kluver Academic Publishing , 1994. Vol. 1, no 4, 257-270 p.
Algorithms, Carrier communication, Constraint theory, Convergence of numerical methods, Distributed parameter control systems, Mobile radio systems, Optimization, Performance, Radio transmitters, Reception quality, Signal to noise ratio, Systems analysis, Carrier to interference ratio, Multiuser radio systems
Computer and Information Science
Research subject SRA - ICT
IdentifiersURN: urn:nbn:se:kth:diva-28580DOI: 10.1007/BF01098870OAI: oai:DiVA.org:kth-28580DiVA: diva2:388023
QC 201101172011-01-162011-01-162011-01-20Bibliographically approved