Comparison of different combining methods for space-diversity FSO systems

Mansour Abadi, Mojtaba, Ghassemlooy, Zabih, Smith, Dave, Ng, Wai Pang, Khalighi, Mohammad-Ali and Zvanovec, Stanislav (2014) Comparison of different combining methods for space-diversity FSO systems. In: 9th International Symposium on Communication Systems, Networks and Digital Sign (CSNDSP 2014), 23rd - 25th July 2014, Manchester, UK.

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Abstract

This paper gives an overview of different signal combining schemes for free space optical (FSO) communication systems employing spatial diversity (SD) for the case of lognormal weak turbulence atmospheric channels. The receiver configurations are explained and categorized into two domains, namely optical and electrical. Moreover, a new combining scheme in the electrical domain, called “logical” domain combining, is introduced. We present closed-form expressions of bit-error-rate for the combining schemes, considering the typical case of a single-input multiple-output (SIMO) system. Through some numerical analyses, we show that depending on the number of receivers and the turbulence strength, the proposed logical combining method outperforms the other ones.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	atmospheric turbulence; free space optics (FSO); Optical communication; spatial diversity
Subjects:	H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Paul Burns
Date Deposited:	04 Dec 2014 16:11
Last Modified:	12 Oct 2019 19:20
URI:	http://nrl.northumbria.ac.uk/id/eprint/18412

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