Abstract
In this paper we address the problem of efficient power allocation in the uplink of CDMA wireless networks, emphasizing on the support of real-time services’ QoS prerequisites. The corresponding problem is formulated as a non-cooperative game where users aim selfishly at maximizing their utility-based performance under the imposed physical limitations. A user’s utility reflects its degree of satisfaction with respect to its actual throughput performance, QoS requirements fulfillment, and the corresponding power consumption. The existence and uniqueness of a Nash equilibrium point of the proposed Uplink Power Control (UPC) game is proven, where all users have attained a targeted SINR value or transmit with their maximum power, leading essentially to an SINR-balanced network. The properties of equilibrium in a pure optimization theoretical framework are studied, and the tradeoffs between users’ overall throughput performance and real-time services strict QoS requirements in channel aware resource allocation processes are revealed and quantified. Finally, a distributed iterative algorithm for computing UPC game’s equilibrium is proposed and its efficiency is illustrated via simulation and analysis.
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Kastrinogiannis, T., Tsiropoulou, EE., Papavassiliou, S. (2008). Utility-Based Uplink Power Control in CDMA Wireless Networks with Real-Time Services. In: Coudert, D., Simplot-Ryl, D., Stojmenovic, I. (eds) Ad-hoc, Mobile and Wireless Networks. ADHOC-NOW 2008. Lecture Notes in Computer Science, vol 5198. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85209-4_24
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DOI: https://doi.org/10.1007/978-3-540-85209-4_24
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-85208-7
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