Cross-layer optimization for energy-efficient wireless communications: a survey
Wireless Communications & Mobile Computing - Next Generation Wireless Communications and Mobile Computing-Networking Technologies
Energy-efficient link adaptation in frequency-selective channels
IEEE Transactions on Communications
Low-complexity energy-efficient OFDMA
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Low-complexity energy-efficient OFDMA
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Proceedings of the 6th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
Proceedings of the 2nd International Conference on Energy-Efficient Computing and Networking
Energy efficient communications for future broadband cellular networks
Computer Communications
Computer Networks: The International Journal of Computer and Telecommunications Networking
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While the demand for battery capacity on mobile devices has grown with the increase in high-bandwidth multi-media rich applications, battery technology has not kept up with this demand. Therefore power optimization techniques are becoming increasingly important in wireless system design. Power optimization schemes are also important for interference management in wireless systems as interference resulting from aggressive spectral reuse and high power transmission severely limits system performance. Although power optimization plays a pivotal role in both interference management and energy utilization, little research addresses their joint interaction. In this paper, we develop energy-efficient power optimization schemes for interference-limited communications. Both circuit and transmit powers are considered and energy efficiency is emphasized over throughput. We note that the general power optimization problem in the presence of interference is intractable even when ideal user cooperation is assumed. We first study this problem for a simple two-user network with ideal user cooperation and then develop a practical non-cooperative power optimization scheme. Simulation results show that the proposed scheme improves not only energy efficiency but also spectral efficiency in an interference-limited cellular network.