Resource allocation and scheduling in multi-cell OFDMA decode-and-forward relaying networks
Ng DWK, Schober R (2010)
Publication Type: Conference contribution
Publication year: 2010
Conference Proceedings Title: GLOBECOM - IEEE Global Telecommunications Conference
Event location: Miami, FL
ISBN: 9781424456383
DOI: 10.1109/GLOCOM.2010.5683464
Abstract
In this paper, we formulate a joint optimization problem for resource allocation and scheduling in multi-cell orthogonal frequency division multiple access (OFDMA) half-duplex decode-and-forward (DF) relay assisted networks. Our problem formulation takes into account multi-cell interference and heterogeneous data rate requirements. We transform the resulting non-convex and combinatorial optimization problem into a standard convex optimization problem by introducing an additional interference constraint, which constitutes a performance lower bound for the original problem. Subsequently, the transformed optimization problem is solved by using dual decomposition and a centralized iterative resource allocation algorithm with closed-form power and subcarrier allocation policies is derived maximizing the average weighted system throughput (bit/s/Hz/base station). Simulation results illustrate that our proposed algorithm approaches the maximum achievable throughput and provides substantial performance gains compared to single-cell optimization. ©2010 IEEE.
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APA:
Ng, D.W.K., & Schober, R. (2010). Resource allocation and scheduling in multi-cell OFDMA decode-and-forward relaying networks. In GLOBECOM - IEEE Global Telecommunications Conference. Miami, FL, US.
MLA:
Ng, Derrick Wing Kwan, and Robert Schober. "Resource allocation and scheduling in multi-cell OFDMA decode-and-forward relaying networks." Proceedings of the 53rd IEEE Global Communications Conference, GLOBECOM 2010, Miami, FL 2010.
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