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B. Krasniqi, M. Wolkerstorfer, C. Mehlführer, C. Mecklenbräuker:
"Sum-Rate Maximization by Bandwidth Re-allocation for Two Users in Partial Frequency Reuse Cellular Networks";
Poster: Asilomar Conference on Signals, Systems, and Computers, Pacific Grove (CA), USA; 11-07-2010 - 11-10-2010; in: "44th Asilomar Conference on Signals, Systems and Computers", (2010).

In this paper we apply constrained optimization techniques to optimally allocate bandwidth and transmit power to the users in a cellular network. We utilize partial frequency reuse with one user in the full and one user in the partial frequency reuse regions as inter-cell interference mitigation technique. We show that the non-convex sum-rate maximization problem becomes convex under some simplifying assumptions. Moreover, an efficient algorithm is used to solve the problem for a fixed bandwidth allocation. Our results show that in the optimum, the full amount of power is assigned to the users. We further demonstrate by simulations that re-allocating the outer cell bandwidth to the inner user when no outer user is present, results in a significantly increased sum-rate.

http://publik.tuwien.ac.at/files/PubDat_192657.pdf