论文信息 - Utility-Based Uplink Power Control in CDMA Wireless Networks with Real-Time Services

Utility-Based Uplink Power Control in CDMA Wireless Networks with Real-Time Services

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.

[1] Symeon Papavassiliou,et al. A Utility-based Resource Allocation Approach for the Downlink in CDMA Wireless Networks with Multimedia Services , 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

[2] H. Vincent Poor,et al. Energy-efficient resource allocation in wireless networks with quality-of-service constraints , 2007, IEEE Transactions on Communications.

[3] Zhisheng Niu,et al. A dynamic utility-based radio resource management scheme for mobile multimedia DS-CDMA systems , 2002, Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE.

[4] H. Vincent Poor,et al. A non-cooperative power control game in delay-constrained multiple-access networks , 2005, Proceedings. International Symposium on Information Theory, 2005. ISIT 2005..

[5] S. Shenker. Fundamental Design Issues for the Future Internet , 1995 .

[6] S. Papavassiliou,et al. Probabilistic short-term delay and throughput requirements of multimedia services in high throughput wireless networks , 2007, 2007 IEEE Sarnoff Symposium.

[7] Andrea J. Goldsmith,et al. A Game-Theoretic Approach to Energy-Efficient Modulation in CDMA Networks with Delay Constraints , 2007, 2007 IEEE Radio and Wireless Symposium.

[8] N.B. Shroff,et al. Joint resource allocation and base-station assignment for the downlink in CDMA networks , 2006, IEEE/ACM Transactions on Networking.