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Proceedings Paper

PHY-DLL dialogue: cross-layer design for optical-wireless OFDM downlink transmission
Author(s): Xuguo Wang; Lee Li
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Paper Abstract

The use of radio over fiber to provide radio access has a number of advantages including the ability to deploy small, low-cost remote antenna units and ease of upgrade. And due to the great potential for increasing the capacity and quality of service, the combination of Orthogonal Frequency Division Multiplexing (OFDM) modulation and the sub-carrier multiplexed optical transmission is one of the best solutions for the future millimeter-wave mobile communication. And this makes the optimum utility of valuable radio resources essential. This paper devises a cross-layer adaptive algorithm for optical-wireless OFDM system, which takes into consideration not only transmission power limitation in the physical layer, but also traffic scheduling and user fairness at the data-link layer. According to proportional fairness principle and water-pouring theorem, we put forward the complete description of this cross-layer adaptive downlink transmission 6-step algorithm. Simulation results show that the proposed cross-layer algorithm outperforms the mere physical layer adaptive algorithm markedly. The novel scheme is able to improve performance of the packet success rate per time chip and average packet delay, support added active users.

Paper Details

Date Published: 5 December 2005
PDF: 9 pages
Proc. SPIE 6022, Network Architectures, Management, and Applications III, 60222P (5 December 2005); doi: 10.1117/12.634099
Show Author Affiliations
Xuguo Wang, Wuhan Univ. of Technology (China)
Lee Li, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 6022:
Network Architectures, Management, and Applications III
Kwok-wai Cheung; Gee-Kung Chang; Guangcheng Li; Ken-Ichi Sato, Editor(s)

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