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DF MISO system with arbitrary beamforming in atmospheric turbulence and misalignment errors

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Abstract

A dual-hop decode-and-forward relay-assisted \(2\times 1\) multiple-input single-output free-space optical (FSO) communication system is considered. Error performance of the considered FSO system is analyzed with an arbitrary beamforming scheme in Gamma–Gamma distributed atmospheric turbulence and misalignment errors. The misalignment errors in the receive apertures of relay and destination are assumed to be zero-boresight, where the radial displacement in the receiver plane is modeled by Rayleigh distribution. The probability density function and moment generating function of received signal-to-noise ratio (SNR) for both the hops are derived first. By utilizing the derived statistics, the expressions of average symbol error rate for subcarrier intensity modulated-based M-ary phase shift keying (M-PSK) and M-ary quadrature amplitude modulation (M-QAM) constellations are obtained in the destination. Monte-Carlo simulations are presented to support the analysis.

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Notes

  1. Without loss of generality we consider that \(\eta \) is same for both the receive apertures.

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Acknowledgements

This work is supported by the Visvesvaraya Young Faculty Research Fellowship from Ministry of Electronics and Information Technology, Government of India.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Visvesvaraya National Institute of Technology, Nagpur, 440010, India

    Prabhat Kumar Sharma

  2. Division of ECE, Netaji Subhas Institute of Technology, Dwarka, New Delhi, India

    Ankur Bansal

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  1. Prabhat Kumar Sharma
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  2. Ankur Bansal
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Correspondence to Ankur Bansal.

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Sharma, P.K., Bansal, A. DF MISO system with arbitrary beamforming in atmospheric turbulence and misalignment errors. Photon Netw Commun 35, 204–209 (2018). https://doi.org/10.1007/s11107-017-0728-6

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  • DOI: https://doi.org/10.1007/s11107-017-0728-6

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