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Title: A new transmitter-receiver architecture for noncoherent multirate OFFH-CDMA system with fixed optimal detection threshold
Authors: Inaty, Elie 
Shalaby, Hossam M. H.
Fortier, Paul
Affiliations: Department of Electrical Engineering 
Keywords: Fiber Bragg grating (FBG)
Multimedia network
Optical fast frequency hopping code-division multiple access (OFFH-CDMA)
Power control function
Issue Date: 2002
Part of: Institute of electrical and electronics engineers (IEEE)
Volume: 6
Start page: 1487
End page: 1493
Conference: Global telecommunications conference (25-29 Nov 2001 : San Antonio, Texas, USA) 
Analyzes a new transmitter-receiver architecture based on a modified version of unipolar-bipolar correlation proposed for a noncoherent multirate optical fast frequency hopping code-division multiple-access (OFFH-CDMA) system. The system assigns a frequency-shifted version (FSV) of the code used to transmit data bit "1" in order to transmit data bit "0." For the original system, we show that due to the nature of the multimedia network, the fluctuation in the multiple-access interference (MAI) average causes a threshold drift and thus an increase in the probability of error. This paper also provides a stochastic description of the MAI average amplitude fluctuation using a predefined multimedia probability density function. A system model is presented; in addition, the signal-to-interference ratio is derived. From the theoretical analysis and numerical results, it is shown that the proposed system has good performance without dynamic estimation of the detection threshold, and thus is independent of both the number of users and the distribution of those users in the offered multimedia classes.
Ezproxy URL: Link to full text
Type: Conference Paper
Appears in Collections:Department of Electrical Engineering

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