Cross-layer scheduling for OFDMA amplify-and-forward relay networks

Ng DWK, Schober R (2009)

Publication Type: Conference contribution

Publication year: 2009

Conference Proceedings Title: IEEE Vehicular Technology Conference

Event location: Anchorage, AK US

ISBN: 9781424425150

DOI: 10.1109/VETECF.2009.5378812

Abstract

In this paper, we consider cross-layer scheduling for the downlink of amplify-and-forward (AF) relay assisted orthogonal frequency division multiple access (OFDMA) networks. The proposed cross-layer design takes into account the effects of imperfect channel state information at transmitter (CSIT) in slow fading. The rate adaptation, power adaptation, and subcarrier allocation policies are optimized to maximize the system goodput (bits/s/Hz successfully received by the mobiles). The optimization problem is solved by using dual decomposition resulting in a highly scalable distributed resource allocation algorithm. Simulation results illustrate that the proposed distributed cross-layer scheduler requires only a small number of iterations to achieves practically the same performance as the optimal centralized scheduler. © 2009 IEEE.

Authors with CRIS profile

Robert Schober

Involved external institutions

University of British Columbia CA Canada (CA)

How to cite

APA:

Ng, D.W.K., & Schober, R. (2009). Cross-layer scheduling for OFDMA amplify-and-forward relay networks. In IEEE Vehicular Technology Conference. Anchorage, AK, US.

MLA:

Ng, Derrick Wing Kwan, and Robert Schober. "Cross-layer scheduling for OFDMA amplify-and-forward relay networks." Proceedings of the 2009 IEEE 70th Vehicular Technology Conference Fall, VTC 2009 Fall, Anchorage, AK 2009.

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