Open AccessMultiplicative PIC detection for OCDMA systems with non‐negativity constraints
Author(s) -
Bentrcia Abdelouahab,
Seleem Hussein,
Fathallah Habib
Publication year - 2018
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2017.0624
Subject(s) - computer science , single antenna interference cancellation , interference (communication) , context (archaeology) , detector , convergence (economics) , multiplicative function , code division multiple access , electronic engineering , field (mathematics) , stability (learning theory) , keying , telecommunications , algorithm , channel (broadcasting) , mathematics , paleontology , mathematical analysis , machine learning , pure mathematics , engineering , economics , biology , economic growth
Non‐negativity constraints arise naturally in many applications such as medical and astronomical imaging. These constraints have been recently exploited in the optical communication field where a projected parallel interference cancelation detector has been developed within the context of cancelling multi‐access interference in upstream on‐off‐keying optical code division multiple access passive optical networks; the latter possess the property that the transmitted data symbols are non‐negative. The authors build upon these results and propose a new parallel interference cancellation structure with better features and improved performance. This detector is characterised by a multiplicative update equation and it exhibits a number of unique and desirable features such as stability and smooth convergence behaviour even for highly loaded systems. Up to our knowledge, this structure has not been proposed before either in optical or in wireless communication field. Simulation results are promising and further improvements are possible.