Joint beamforming, resource allocation, and scheduling for multi-cell multi-user MIMO-OFDMA systems
Zhu J, Schober R, Bhargava V (2012)
Publication Type: Conference contribution
Publication year: 2012
Pages Range: 4594-4599
Conference Proceedings Title: GLOBECOM - IEEE Global Telecommunications Conference
Event location: Anaheim, CA
ISBN: 9781467309219
DOI: 10.1109/GLOCOM.2012.6503843
Abstract
In this paper, we formulate an optimization problem for joint transmit beamforming, resource allocation, and user scheduling for multi-cell multi-user multiple-input multiple-output (MIMO) orthogonal frequency division multiple access (OFDMA) networks aiming at total average weighted system throughput maximization. Despite the non-convex and combinatorial characteristics of the resulting problem, we transform it into a standard convex optimization problem by introducing an extra sum interference constraint and certain relaxations, which leads to a lower bound for the original problem. Applying Lagrange dual decomposition, we successfully solve the transformed problem in a distributed manner with closed-form expressions for the optimal beamformers, power adaptation, and subcarrier allocation. Numerical results show that our proposed scheme provides a considerable performance gain compared to other existing strategies in terms of weighted system throughput. © 2012 IEEE.
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APA:
Zhu, J., Schober, R., & Bhargava, V. (2012). Joint beamforming, resource allocation, and scheduling for multi-cell multi-user MIMO-OFDMA systems. In GLOBECOM - IEEE Global Telecommunications Conference (pp. 4594-4599). Anaheim, CA, US.
MLA:
Zhu, Jun, Robert Schober, and Vijay Bhargava. "Joint beamforming, resource allocation, and scheduling for multi-cell multi-user MIMO-OFDMA systems." Proceedings of the 2012 IEEE Global Communications Conference, GLOBECOM 2012, Anaheim, CA 2012. 4594-4599.
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