Fundamental limitations of power control and radio resource management in wireless networks: Research Articles

Authors:
Fredrik Gunnarsson
Affiliations:
Division of Control and Communications, Department of Electrical Engineering, SE-581 83 Linkoping, Sweden
Venue:
Wireless Communications & Mobile Computing
Year:
2004

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Abstract

The ultimate resource in wireless networks is transmission power. The system stability and the resource sharing algorithms all rely on well functioning power control. To realistically address resource management algorithms, it is important to consider fundamental limitations of the radio resource and of power control. Exact and approximate capacity expressions are derived and related to Quality of Service (QoS) requirements of services. Power control is subject to limited update rate, limited feedback bandwidth, time delays, measurement errors, feedback errors and filtering effects which all affect the resulting performance. Simulations further illustrate the hampering effects and motivates models of power control inaccuracies. Copyright © 2004 John Wiley & Sons, Ltd.