Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/46845
標題: Study of Power Control on Double-Weight Codes With an Arbitrary Maximum Cross-Correlation Value in Variable-QoS Optical CDMA
作者: Chen, L.S.
楊谷章
Yang, G.C.
Chang, C.Y.
Kwong, W.C.
關鍵字: Optical code division multiple access;power control;quality of;service;variable weight;performance analysis;orthogonal codes;beat noise;networks;systems;ocdma;multirate;coherent
Project: Journal of Lightwave Technology
期刊/報告no:: Journal of Lightwave Technology, Volume 29, Issue 21, Page(s) 3293-3303.
摘要: 
In this paper, the use of power and weight control in multimedia, variable quality-of-services (QoS) incoherent optical code-division multiple-access (O-CDMA) systems in on-off keying is studied. An adjustable-power and variable-weight incoherent O-CDMA architecture is presented and the general performance model of 1-D and 2-D double-weight optical codes with an arbitrary maximum cross-correlation value lambda(c) is formulated as functions of code weight and chip power. Our results show that the performance of double-weight codes can be fine-tuned by varying both code weight and power, and they play different roles in the QoS differentiation. From the numerical examples, we show that lambda(c) = 2 double-weight codes can perform as good as their lambda(c) = 1 counterparts and, at the same time, have the advantage of supporting more possible subscribers. This general analytical model is important for power-sensitive applications, such as in-service monitoring and fiber-fault surveillance in optical networks and sensor-identification in fiber-sensor systems with the use of optical codes.
URI: http://hdl.handle.net/11455/46845
ISSN: 0733-8724
DOI: 10.1109/jlt.2011.2167956
Appears in Collections:通訊工程研究所

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