Error performance of preamplified optical PPM systems with finite extinction ratios |
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| Affiliation: | 1. College of Computer Science, Chongqing University, Chongqing 400044, PR China;2. School of Electronic and Information Engineering, Southwest University, Chongqing 400715, PR China;1. Instituto Balseiro (CNEA – UNCuyo), Avenida Bustillo 9500, (8400) Bariloche, Argentina;2. Centro de Investigaciones Ópticas (CONICET La Plata – CIC), La Plata (1900), Argentina;3. Instituto de Tecnología, Facultad de Ingeniería y Ciencias Exactas, Universidad Argentina de la Empresa, Buenos Aires (C1073AAO), Argentina;1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China;2. Huawei Technologies Co., Ltd., Shenzhen 518129, China;1. Universidad Autónoma de Nuevo León, Facultad de Ciencias Físico-Matemáticas, Av. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza, C.P. 66451, Nuevo León, Mexico;2. Centro de Investigaciones en Óptica, A.C. Loma del Bosque 115, C.P. 37150 León, Guanajuato, Mexico;3. Centro de Investigación en Ingeniería y Ciencias Aplicadas, CIICAp, Universidad Autónoma del Estado de Morelos, UAEM, Av. Universidad No. 1001, Col. Chamilpa, C.P. 62209 Cuernavaca, Morelos, Mexico |
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| Abstract: | In this paper, we present an analytical study of the error performance in optically preamplified, M-ary pulse position modulation, in free-space optical communication systems with finite extinction ratios. We derive a theoretical expression for the probability of bit error and compute it numerically for different symbol sizes and extinction ratios. We also provide the power penalty due to a finite extinction ratio for both coded and uncoded systems. The study shows that, in certain cases and for a given extinction ratio, lower symbol sizes may yield an error performance similar to that achieved by higher symbol sizes. |
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| Keywords: | Free-space optical communications Pulse position modulation Rician probability distribution Probability of bit error |
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