標題: | An Energy and Cost Efficient WDM/OFDMA PON System Architecture |
作者: | Yuang, Maria Tien, Po-Lung Chen, Jyehong 資訊工程學系 Department of Computer Science |
關鍵字: | Passive Optical Network (PON);External Modulation;Energy Efficient;Orthogonal Frequency Division Multiple Access (OFDMA) |
公開日期: | 1-Jan-2013 |
摘要: | In this paper, we propose an energy and cost efficient WDM/OFDMA PON system architecture, referred to as NEWOPS. Based on a two-tiered semi-tree topology, NEWOPS allows a large number of ONUs to be connected to OLT using only a handful of colorless transceivers. NEWOPS\' unique architecture not only facilitates high spectral efficiency and flexible sub-channel bandwidth allocation, but also enables the system to achieve high energy and cost efficiency. We conduct a theoretical study to identify and resolve a new data-rate performance issue due to the colorless and wavelength re-use design of the system. Experimental results show that when only 5-GHz bandwidth is allotted for each wavelength, NEWOPS successfully achieves symmetric 20-Gb/s downstream and upstream OFDM-16QAM transmissions via the same fiber trunk. As a demonstration of our system, we show how NEWOPS achieves energy efficiency that is two to twelve times higher than that of a typical tree-based WDM/OFDM PON when supporting 40 ONUs. |
URI: | http://hdl.handle.net/11536/128551 |
ISBN: | 978-1-4799-1353-4 |
ISSN: | 1930-529X |
期刊: | 2013 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM) |
起始頁: | 2407 |
結束頁: | 2412 |
Appears in Collections: | Conferences Paper |