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Wireless Networks

, Volume 4, Issue 4, pp 233–240 | Cite as

Non-cooperative uplink power control in cellular radio systems

  • Hongbin Ji
  • Ching-Yao Huang
Article

Abstract

This paper presents uplink power control in cellular radio systems from an economic point of view. A utility function is defined for each mobile user, which reflects the user's preference regarding the carrier-to-interference ratio (CIR) and the transmitter power. We observe that, on one hand, mobile users prefer to transmit at a lower power for a fixed CIR. On the other hand, for a given transmitter power, users prefer to obtain a better CIR. Based on this observation, we make two fundamental assumptions about the utility function. We formulate the uplink power control problem as a non-cooperative N-person game. Under the two assumptions that we make about the utility function, there exists a Nash equilibrium. To show the generality of the framework, we study one special case by defining the utility as a linear function. This model encompasses many of the widely studied power control problems. A more general case is also studied by defining utility as an exponential function. This paper establishes a general economic-based framework for studying resource management in wireless networks and points out new research directions.

Keywords

Utility Function Nash Equilibrium Transmitter Power Power Control Mobile User 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Hongbin Ji
    • 1
  • Ching-Yao Huang
    • 1
  1. 1.Department of Electrical and Computer Engineering, RutgersThe State University of New JerseyPiscatawayUSA

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