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In this paper, the authors investigate the application of Optical Code Division Multiple Access (OCDMA) to multimedia transmission (voice, data, video). The various services are differentiated by assigning to each user a specific Two-Dimensional (2D) code signature. The coding method used is adapted from 2D Multi-Wavelength Optical Orthogonal Codes (MWOOC). They first generate 2D multi-weight codes to differentiate the Quality of Service (QoS). Then, by applying a parallel mapping technique, they achieve multi-rate services. The theoretical error probability corresponding to the quality of each service is established in the noiseless case.
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