Selection diversity‐aided subcarrier intensity modulation/spatial modulation for free‐space optical communication
نویسندگان
چکیده
منابع مشابه
MIMO Free-Space Optical Communication Employing Subcarrier Intensity Modulation in Atmospheric Turbulence Channels
In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel. Subcarrier modulation is employed to eliminate the need for adaptive threshold detector. Direct detection is employed at the receiver and each subca...
متن کاملSubcarrier Intensity Modulated Free-space Optical Communication Systems
ii List of Figures viii List of Tables xiv Glossary of Abbreviations xv Glossary of Symbol xviii Dedication xxiv Acknowledgements xxv Declaration xxvi Chapter One Introduction 1 1.1 Background 1 1.2 Research Motivation and Justification 5 1.3 Research Objectives 11 1.4 Thesis Organisation 13 1.5 Original Contributions 15 1.6 List of Publications and Awards 18 Chapter Two Fundamentals of FSO 21 2.
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We propose a parallel combinatory multiplesubcarrier (PC-MS) optical communication system. The proposed system with N subcarriers selects at each symbol interval a subset of U null subcarriers and transmits ⌊ log2 ( N U )⌋ bits for the selected subset. The other N −U = Npc subcarriers are modulated by points from an M -PSK signal constellation. Thus, the proposed system can transmit more inform...
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The bit error rate (BER) expression and performance of free-space optical communication link in clear but turbulent atmosphere using subcarrier intensity modulation (SIM) with differential phase shift keying (DPSK) is presented. The practical linear combining technique suitable for differentially modulated data (selection combining) is considered and its performance evaluated under weak atmosph...
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An expression for the bit error rate of a multiple subcarrier intensity-modulated atmospheric optical communication system employing spatial diversity is derived. Spatial diversity is used to mitigate scintillation caused by atmospheric turbulence, which is assumed to obey lognormal distribution. Optimal but complex maximum ratio, equal gain combining (EGC) and relatively simple selection combi...
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ژورنال
عنوان ژورنال: IET Optoelectronics
سال: 2015
ISSN: 1751-8776,1751-8776
DOI: 10.1049/iet-opt.2014.0016