Resource allocation for secure OFDMA networks with imperfect CSIT

Ng DWK, Lo ES, Schober R (2011)

Publication Type: Conference contribution

Publication year: 2011

Conference Proceedings Title: GLOBECOM - IEEE Global Telecommunications Conference

Event location: Anaheim, CA US

ISBN: 9781424492688

DOI: 10.1109/GLOCOM.2011.6133580

Abstract

In this paper, we formulate an optimization problem for resource allocation and scheduling in orthogonal frequency division multiple access (OFDMA) networks. Our problem formulation takes into account artificial noise generation to combat a passive multiple antenna eavesdropper and the effects of imperfect channel state information at the transmitter (CSIT) in slow fading. The optimization problem is solved by dual decomposition which results in an iterative resource allocation algorithm with a fast speed of convergence. The packet data rate, secrecy data rate, power, and subcarrier allocation policies are optimized to maximize the average secrecy outage capacity (bit/s/Hz securely and successfully delivered to the users). Simulation results illustrate that our proposed iterative algorithm converges to the optimal solution in a small number of iterations and guarantees a non-zero secrecy data rate for given target secrecy outage and channel outage probability requirements. © 2011 IEEE.

Authors with CRIS profile

Robert Schober

Involved external institutions

Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) ES Spain (ES) University of British Columbia CA Canada (CA)

How to cite

APA:

Ng, D.W.K., Lo, E.S., & Schober, R. (2011). Resource allocation for secure OFDMA networks with imperfect CSIT. In GLOBECOM - IEEE Global Telecommunications Conference. Anaheim, CA, US.

MLA:

Ng, Derrick Wing Kwan, Ernest S. Lo, and Robert Schober. "Resource allocation for secure OFDMA networks with imperfect CSIT." Proceedings of the 54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011, Anaheim, CA 2011.

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