Approach to Interference Cancellation in DS-CDMA Optical Networks

• Published in: Journal of optical communications and networking Vol. 1; no. 3; pp. 204 - 212
• Main Authors: Okassa-M'foubat, Anicet, Dayoub, Iyad, Rouvaen, Jean-Michel, Hamouda, Walaa, Mazen, Awad
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.08.2009; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Piscataway, NJ ; Washington, DC : IEEE : Optical Society of America
• Subjects: Additive white noise; AWGN; Cancellation; Fiber optics communications; Fiber optics sources and detecters; Gaussian; Integrated optics; Interference; Interference cancellation; Mathematical analysis; Multiaccess communication; Multiple access; Multiple access interference; Networks; Noise; Optical communication; Optical devices; Optical fiber networks; Optical noise; Optical receivers; Photonics; Radio frequency; Receivers
• ISSN: 1943-0620; 1943-0639
• DOI: 10.1364/JOCN.1.000204

Optical code mutiple access (OCDMA) networks are subject to several limitations, such as multiple access interference (MAI), as well as the noise of the optical components. In this work we propose an interference cancellation technique using the bias mitigation and linear estimators in parallel interference cancellation (PIC) receivers. In order to make the analysis more tractable, the proposed technique is described for a synchronous multiuser communication scenario with multiple access interference in an additive white Gaussian noise (AWGN) channel. Estimates for the error probabilities of the proposed OCDMA detector are derived using the Gaussian approximation for interference terms. Some analytical and numerical results for our system are given and compared with those for other receivers with the same order of complexity.parallel receivers.