Title
On the cutoff rates of a multiclass OFFH-CDMA system
Abstract
We consider an optical code-division multiple-access (OCDMA) network that supports multiple traffic classes. Each class has different processing gain and performance requirements. In this paper, a new method is proposed to analyze the cutoff rates for a multiclass, multirate optical frequency-hopping code-division multiple-access system using fiber Bragg gratings and direct detection. This approach exploits the linear structure of passive OCDMA systems and the nominal time required to accomplish the encoding-decoding operations in such systems. A system model is presented and analyzed, based on a newly introduced bit-overlap procedure. An expression for the cutoff rate of a single-class system is derived. In addition, for a multiclass system, an expression that relates the cutoff rates of the offered classes is introduced, and it is called the service curve. It is shown that for a required quality of service guarantee, a number of active users, and a given probability of hit, the system's data rate can be increased beyond the nominal limit imposed by the physical constraint of the encoder-decoder set.
Year
DOI
Venue
2005
10.1109/TCOMM.2004.841999
IEEE Transactions on Communications
Keywords
Field
DocType
Bragg gratings,code division multiple access,frequency hop communication,multimedia communication,optical fibre networks,telecommunication traffic,QoS,bit-overlap procedure,cutoff rate,fiber Bragg grating,multiclass OFFH-CDMA system,multimedia network,network traffic,optical frequency-hopping code-division multiple-access system,passive system,quality of service,single-class system,Cutoff rate,fiber Bragg grating,multimedia network,multirate,optical frequency-hopping code-division multiple access (OFFH-CDMA),overlapping coefficient
Fiber Bragg grating,Telecommunications network,Computer science,Cutoff,Quality of service,Electronic engineering,Decoding methods,Process gain,Code division multiple access,System model
Journal
Volume
Issue
ISSN
53
2
0090-6778
Citations 
PageRank 
References 
4
0.54
6
Authors
3
Name
Order
Citations
PageRank
Elie Inaty13411.97
Hossam M. H. Shalaby26720.64
Paul Fortier310117.51