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 CA

ISBN: 9781457720529

DOI: 10.1109/ICC.2012.6364677

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.

Authors with CRIS profile

Involved external institutions

How to cite

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.

BibTeX: Download