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Power control for wireless data
Goodman, D. ; Mandayam, N.
IEEE personal communications, 2000-04, Vol.7 (2), p.48-54
[Periódico revisado por pares]
New York: IEEE
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Título:
Power control for wireless data
Autor:
Goodman, D.
;
Mandayam, N.
Assuntos:
Algorithms
;
Cellular phones
;
Context-aware services
;
Game theory
;
Mathematical analysis
;
Mathematics
;
Microeconomics
;
Mobile communication
;
Multimedia communication
;
Multimedia systems
;
Power control
;
Strategy
;
Studies
;
Telephones
;
Telephony
;
Terminals
;
Utilities
É parte de:
IEEE personal communications, 2000-04, Vol.7 (2), p.48-54
Notas:
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição:
With cellular phones mass-market consumer items, the next frontier is mobile multimedia communications. This situation raises the question of how to perform power control for information sources other than voice. To explore this issue, we use the concepts and mathematics of microeconomics and game theory. In this context, the quality of service of a telephone call is referred to as the "utility" and the distributed power control problem for a CDMA telephone is a "noncooperative game." The power control algorithm corresponds to a strategy that has a locally optimum operating point referred to as a "Nash equilibrium." The telephone power control algorithm is also "Pareto efficient," in the terminology of game theory. When we apply the same approach to power control in wireless data transmissions, we find that the corresponding strategy, while locally optimum, is not Pareto efficient. Relative to the telephone algorithm, there are other algorithms that produce higher utility for at least one terminal, without decreasing the utility for any other terminal. This article presents one such algorithm. The algorithm includes a price function proportional to transmitter power. When terminals adjust their power levels to maximize the net utility (utility-price), they arrive at lower power levels and higher utility than they achieve when they individually strive to maximize utility.
Editor:
New York: IEEE
Idioma:
Inglês
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