Maximizing the sum rate in symmetric networks of interfering links

SR Bhaskaran; SV Hanly; N Badruddin; JS Evans

Journal article

Maximizing the sum rate in symmetric networks of interfering links

SR Bhaskaran, SV Hanly, N Badruddin, JS Evans

IEEE Transactions on Information Theory | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | Published : 2010

DOI: 10.1109/TIT.2010.2054652

Abstract

We consider the power optimization problem of maximizing the sum rate of a symmetric network of interfering links in Gaussian noise. All transmitters have an average transmit power constraint, the same for all transmitters. This problem has application to DSL, as well as wireless networks. We solve this nonconvex problem by indentifying some underlying convex structure. In particular, we characterize the maximum sum rate of the network, and show that there are essentially two possible states at the optimal solution depending on the cross-gain (√ε) between the links, and/or the average power constraint: the first is a wideband (WB) state, in which all links interfere with each other, and the ..

View full abstract

University of Melbourne Researchers

Jamie Evans Author

Related Projects (1)

Closing the Gap: Fundamental Capacity Limits for Interfering Wireless Networks and Practical Methods to Get There

Enhancing communication networks to achieve broadband data rates is now a national priority. Wireless communications is hugely important, wi..

Grants

Awarded by Australian Research Council

Funding Acknowledgements

The authors would like to thank the Australian Research Council for support under Grant DP0984862 and Prof. P. R. Kumar for insightful discussions.Manuscript received July 17, 2009; revised April 20, 2010. Date of current version August 18, 2010. This work was supported in part by ARC Grant DP0984862 and in part by NUS Grant R-263-000-572-133.