relation: https://khub.utp.edu.my/scholars/955/
title: Improvement of ground to satellite FSO link performance using transmit diversity in weak atmospheric turbulence
creator: Kaushal, H.
creator: Jain, V.K.
creator: Kar, S.
description: The performance of ground to satellite Free Space Optical (FSO) communication link is degraded due to the presence of atmospheric turbulence that causes fluctuations in both intensity and phase of the received optical signal. In this paper, bit error rate (BER) performance of FSO link using transmit diversity is investigated for coherent (sub-carrier BPSK and sub-carrier QPSK) and non-coherent (OOK and Q-PPM) modulation schemes in weak atmospheric turbulence channel. It is seen that multiple transmitting antennae help to overcome the turbulence induced fading effect. It is observed that sub-carrier BPSK modulation outperforms the other modulation schemes in terms of minimum SNR requirement for a given BER. Among non-coherent modulation schemes, Q-PPM performs better than OOK. However, as the level of Q in Q-PPM increases, its performance degrades and it becomes worse than OOK for certain values of atmospheric turbulence. Also, the effect of correlation among different transmitting antennae beams is analysed on the link performance.
date: 2010
type: Conference or Workshop Item
type: PeerReviewed
identifier:   Kaushal, H. and Jain, V.K. and Kar, S.  (2010) Improvement of ground to satellite FSO link performance using transmit diversity in weak atmospheric turbulence.  In: UNSPECIFIED.     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952746381&doi=10.1109%2fICIAS.2010.5716119&partnerID=40&md5=c8d34dcc11286b3ce4c77e89692c79cf
relation: 10.1109/ICIAS.2010.5716119
identifier: 10.1109/ICIAS.2010.5716119