Energy-efficient resource allocation in OFDMA systems with large numbers of base station antennas
Ng DWK, Schober R (2012)
Publication Type: Conference contribution
Publication year: 2012
Journal
Pages Range: 5916-5920
Conference Proceedings Title: IEEE International Conference on Communications
Event location: Ottawa
ISBN: 9781457720529
Abstract
In this paper, resource allocation for energy efficient communication in orthogonal frequency division multiple access (OFDMA) downlink networks with large numbers of base station (BS) antennas is studied. Assuming perfect channel state information at the transmitter (CSIT), the resource allocation algorithm design is modeled as a non-convex optimization problem for maximizing the energy efficiency of data transmission (bit/Joule delivered to the users), where the circuit power consumption and a minimum required data rate are taken into consideration. Subsequently, by exploiting the properties of fractional programming, an efficient iterative resource allocation algorithm is proposed to solve the problem. In particular, the power allocation, subcarrier allocation, and antenna allocation policies for each iteration are derived. Simulation results illustrate that the proposed iterative resource allocation algorithm converges in a small number of iterations and unveil the trade-off between energy efficiency and the number of antennas. © 2012 IEEE.
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APA:
Ng, D.W.K., & Schober, R. (2012). Energy-efficient resource allocation in OFDMA systems with large numbers of base station antennas. In IEEE International Conference on Communications (pp. 5916-5920). Ottawa, CA.
MLA:
Ng, Derrick Wing Kwan, and Robert Schober. "Energy-efficient resource allocation in OFDMA systems with large numbers of base station antennas." Proceedings of the 2012 IEEE International Conference on Communications, ICC 2012, Ottawa 2012. 5916-5920.
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