کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
849278 909262 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic bandwidth allocation of both upstream and downstream in Orthogonal Frequency Division Multiplexing Passive Optical Network
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Dynamic bandwidth allocation of both upstream and downstream in Orthogonal Frequency Division Multiplexing Passive Optical Network
چکیده انگلیسی

Recently, more and more attention has been paid to the Orthogonal Frequency Division Multiplexing Passive Optical Network (OFDM-PON). And more importance has been attached to the algorithm achieving dynamic bandwidth allocation (DBA) by researchers. In this paper, an algorithm which aims at achieving multi-granularity DBA based on OFDM-PON is proposed. With the change of bandwidth needs, the number of subcarriers and their modulation formats can be adjusted adaptively. To efficiently utilize the bandwidth, the algorithm introduces a scheme from TDM-PON based on cyclic rotation and polling mechanism. An inner ONU queue is also proposed and multiple subcarrier channels are established in both upstream and downstream. Both simulation and analysis show that the bandwidth utilization of OFDM-PON is efficient.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 124, Issue 18, September 2013, Pages 3476–3479
نویسندگان
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