Energy efficiency is a measure of performance in wireless networks. Therefore, controlling the transmitter power at a given node increases not only the operating life of the battery but also the overall system capacity by successfully admitting new links between a source and a destination. It is essential to find effective means of power control of point-to-point, broadcasting and multicasting ...

An extensible power supply control and monitoring system has been developed at Fermilab’s Technical Division to control and monitor power supplies of various types from within many different applications. This system, deployed as a network service, provides uniform programming and user interfaces for various types of power supplies, ranging from 20A to 30kA. 1 SYSTEM ORGANIZATION The Magnet Tes...

Power control has been shown to be an effective way to increase capacity in wireless systems. In previous work on power control, it has been assumed that power levels can be assigned from a continuous range. In practice, however, power levels are assigned from a discrete set. In this work, we consider the minimization of the total power transmitted over given discrete sets of available power le...

In this paper, we integrate the channel assignment and power assignment into a distributed channel access algorithm. A cost-function is introduced to provide some optional channels according to their cost for transmitted power level searching. The simulation results show that this algorithm largely increases capacity compared with the fixed channel allocation (FCA). The proposed algorithm can a...

In wireless cellular communication, it is essential to nd e ective means of power control of signals received from randomly dispersed users within one cell. E ective power control will heavily impact the system capacity. Distributed power control (DPC) is a natural choice for such purpose, because unlike centralized power control, DPC does not require extensive computational power. Distributed ...

This paper addresses downlink cooperation at a system level. Cooperation between Base Stations is an alternative to macrodiversity to provide QoS continuity in case of mobility. We propose a Radio Resource Management strategy for the relay channel, made of relayed users identification, resource allocation and power control in an OFDMA-based system. Four scheduling methods are tested for power a...

Transmitter power control has proven to be an efficient method to control cochannel interference in cellular PCS, and to increase bandwidth utilization. Power control can also improve channel quality, lower the power consumption, and facilitate network management functions such as mobile removals, hand-off and admission control. Most of the previous studies have assumed that the transmitter pow...

Chaouki Abdallah Electrical & Computer Engineering Department The University of New Mexico Albuquerque, New Mexico 87131 USA E-mail: [email protected] In wireless cellular communication, it is essential to find effective means for power control of signals received from randomly dispersed users within one cell. Effective power control will heavily impact the system capacity. Distributed power...

Large electrical power networks viewed as continuum systems have been studied under constant voltage magnitude assumptions. The continuum system phase behavior was proved to follow the dynamics of a second order nonlinear wave equation. The latter represents electromechanical wave propagation in large electric power networks. In this paper, we generalize this work to time and space variant volt...