Improving the performance of electrical duty-cycle division multiplexing with optimum signal level spacing |
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| Authors: | Ghafour Amouzad Mahdiraji Ahmad Fauzi Abas |
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| Institution: | 1. Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. Photonics and Fiber Optic Systems Laboratory, Centre of Excellence for Wireless and Photonics Networks, Engineering and Technology Complex, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia;1. School of Information Engineering, Minzu University of China, Beijing 100081, China;2. State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;1. Istituto di Enologia e Ingegneria Agro-Alimentare, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy;2. University of Torino, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Largo Paolo Braccini 2, 10095 Grugliasco (TO), Italy;3. University of Agricultural Sciences and Veterinary Medicine, Street Calea M?n??tur 3-5, 400372 Cluj-Napoca, Romania |
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| Abstract: | Performance optimization of 3 × 10 Gbps conventional electrical-duty-cycle division multiplexing (C-E-DCDM) technique is investigated. It is shown that controlling signal level spacing can optimize its performance. Two level spacing optimization techniques, one in electrical domain and another in optical domain are examined. In general, performance of the C-E-DCDM is improved significantly using both approaches. The results show by optimization, an improvement of around 5.5 dB can be achieved for the C-E-DCDM in terms of receiver sensitivity and optical signal-to-noise ratio using both electrical and optical methods. However, chromatic dispersion tolerance in one of the optimization approaches is degraded by around 34 ps/nm for negative dispersion, while the positive dispersion tolerance improved compared to the C-E-DCDM. |
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