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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 5, Iss. 12 — Dec. 1, 2013
  • pp: 1353–1360

Power Efficient Dynamic Bandwidth Allocation Algorithm in OFDMA-PONs

Weizhi You, Lilin Yi, Silu Huang, Jian Chen, and Weisheng Hu  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 5, Issue 12, pp. 1353-1360 (2013)
http://dx.doi.org/10.1364/JOCN.5.001353


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Abstract

We propose two dynamic bandwidth allocation (DBA) algorithms by considering three dimensions, i.e., time slot, subcarrier, and bit allocation, to minimize the transmitting power of optical network units (ONUs) in orthogonal frequency division multiplexing access passive optical networks (OFDMA-PONs). In the first proposed algorithm, we make use of the three-dimensional DBA algorithm from wireless OFDM, modify it according to the characteristics of the fiber channel, and apply it to upstream access in OFDMA-PONs to reduce the transmitting power of ONUs. In order to further minimize the total transmitting power, we propose the second algorithm by allocating the subcarrier and bit in the same procedure. The complexity of the two proposed algorithms was evaluated by polynomial time. From simulation results, the transmitting power of ONUs under a certain bit error rate is reduced by 30% and 50% using the first and the second proposed algorithms, respectively, compared with the traditional two-dimensional DBA algorithm in OFDMA-PONs.

© 2013 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4080) Fiber optics and optical communications : Modulation
(060.4250) Fiber optics and optical communications : Networks
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Research Papers

History
Original Manuscript: March 25, 2013
Revised Manuscript: September 20, 2013
Manuscript Accepted: September 27, 2013
Published: November 21, 2013

Citation
Weizhi You, Lilin Yi, Silu Huang, Jian Chen, and Weisheng Hu, "Power Efficient Dynamic Bandwidth Allocation Algorithm in OFDMA-PONs," J. Opt. Commun. Netw. 5, 1353-1360 (2013)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-5-12-1353


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