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Performance analysis of the decode-andforward relay-based RF-FSO communication system in the presence of pointing errors

Publication Type : Journal Article

Publisher : IET Signal Processing

Source : IET Signal Processing, Institution of Engineering and Technology, Volume 13, Issue 4, p.480-485 (2019)

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Keywords : Average bit-error rates, Bandwidth, Bit error rate, Communication modeling, cooperative communication, Cumulative distribution function, Decode-and-forward relay, Decoding, distribution functions, Errors, Heterodyne detection, Mathematical expressions, Mathematical formulation, Mobile telecommunication systems, Modulation, moment generating function, Optical communication, Probability density function, Probability distributions, Rayleigh fading, Signal to noise ratio, Statistical characteristics

Campus : Coimbatore

School : School of Engineering

Department : Electronics and Communication

Year : 2019

Abstract : This study focuses on the analysis of a decode-and-forward relay-based asymmetric radio frequency-free space optical (RF-FSO) communication system. These types of communication systems are of very high speed, secure, and costeffective. Such systems can be used to provide the last-mile access to many household users and can provide temporary network access during disasters and link failures. In the communication model analysed, the RF path is considered as Rayleigh fading, and the FSO path is considered as Málaga (M)-distributed turbulence fading with the pointing error. Two types of detection schemes consisting of intensity modulation/direct detection and heterodyne detection are considered at the receiver for the analysis. For this cooperative communication system, novel mathematical expressions for the cumulative distribution function, probability density function, and moment generating function of the end-to-end signal-to-noise ratio are derived. With the aid of these statistical characteristics, new closed mathematical formulations are obtained for outage probability and the average bit error rate for different binary and M-ary modulation approaches. © The Institution of Engineering and Technology 2019.

Cite this Research Publication : Jagadeesh Vellakudiyan, Vineeth Palliyembil, Imran Shafique Ansari, P Muthuchidambaranathan, Khalid A Qaraqe, “Performance analysis of the decode-andforward relay-based RF-FSO communication system in the presence of pointing errors”, IET Signal Processing, 13, 480-485, 2019.

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